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I’ve been playing with the “Careless Whisper” side-channel idea and hacked together a small PoC that shows how you can track a phone’s device activity state (screen on/off, offline) via WhatsApp – without any notifications or visible messages on the victim’s side.
How it works (very roughly):
- uses WhatsApp via an unofficial API
- sends tiny “probe” reactions to special/invalid message IDs
- WhatsApp still sends back silent delivery receipts
- I just measure the round-trip time (RTT) of those receipts
From that, you start seeing patterns like:
- low RTT ≈ screen on / active, usually on Wi-Fi
- a bit higher RTT ≈ screen on / active, on mobile data
- high RTT ≈ screen off / standby on Wi-Fi
- very high RTT ≈ screen off / standby on mobile data / bad reception
- timeouts / repeated failures ≈ offline (airplane mode, no network, etc.)
*depends on device
The target never sees any message, notification or reaction. The same class of leak exists for Signal as well (per the original paper).
In theory you’d still see this in raw network traffic (weird, regular probe pattern), and on the victim side it will slowly burn through a bit more mobile data and battery than “normal” idle usage.
Over time you can use this to infer behavior:
- when someone is probably at home (stable Wi-Fi RTT)
- when they’re likely sleeping (long standby/offline stretches)
- when they’re out and moving around (mobile data RTT patterns)
So in theory you can slowly build a profile of when a person is home, asleep, or out — and this kind of tracking could already be happening without people realizing it.
Quick “hotfix” for normal users:
Go into the privacy settings of WhatsApp and Signal and turn off / restrict that unknown numbers can message you (e.g. WhatsApp: Settings → Privacy → Advanced). The attack basically requires that someone can send stuff to your number at all – limiting that already kills a big chunk of the risk.
My open-source implementation (research / educational use only): https://github.com/gommzystudio/device-activity-tracker
Original Paper:
https://arxiv.org/abs/2411.11194
For this week in scams, we have fake AI-generated shopping images that could spoil your holidays, scammers use an Apple Support ticket in a takeover attempt, and a PlayStation scam partly powered by AI.
Let’s start with those fake ads, because holiday shopping is in full swing.
Turns out that three-quarters of people (74%) can’t correctly identify a fake AI-generated social media ad featuring popular holiday gifts—which could leave them open to online shopping scams.
That finding, and several others, comes by way of research from Santander, a financial services company in the UK.
Here’s a quick rundown of what else they found:
From the study … could you tell these ads are both fake?
In all, cheap and readily available AI tools make spinning up fake ads quick and easy work. The same goes for launching websites where those “goods” can get sold. In the past, we’ve seen scammers take two different approaches when they use social media ads and websites to lure in their victims:
During the holidays, scammers pump out ads that offer seemingly outstanding deals on hot items. Of course, the offer and the site where it’s “sold” is fake. Victims hand over their personal info and credit card number, never to see the items they thought they’d purchased. On top of the money a victim loses, the scammer also has their card info and can run up its tab or sell it to others on the dark web.
In this case, the scammer indeed sells and delivers something. But you don’t get what you paid for. The item looks, feels, fits, or works entirely differently than what was advertised. In this way, people wind up with a cheaply made item cobbled together with inferior materials. Worse yet, these scams potentially prop up sweatshops, child labor, and other illegal operations in the process. Nothing about these sites and the things they sell on them are genuine.
So, fake AI shopping ads are out there. What should you look out for? Here’s a quick list:
“I almost lost everything—my photos, my email, my entire digital life.”
So opens a recent Medium post from Eric Moret recounting how he almost handed over his Apple Account to a scammer armed with a real Apple Support ticket to make this elaborate phishing attack look legit.
Over the course of nearly 30 minutes, a scammer calmly and professionally walked Moret through a phony account takeover attempt.
It started with two-factor authentication notifications that claimed someone was trying to access his iCloud account. Three minutes later, he got a call from an Atlanta-based number. The caller said they were with Apple Support. “Your account is under attack. We’re opening a ticket to help you. Someone will contact you shortly.”
Seconds later came another call from the same number, which is where the scam fully kicked in. The person also said they were from Apple Support and that they’d opened a case on Moret’s behalf. Sure enough, when directed, Moret opened his email and saw a legitimate case number from a legitimate Apple address.
The caller then told him to reset his password, which he did. Moret received a text with a link to a site where he could, apparently, close his case.
Note that at no time did the scammers ask him for his two-factor authentication code throughout this process, which is always the sign of a scam. However, the scammers had another way to get it.
The link took him to a site called “appeal-apple dot com,” which was in fact a scam site. However, the page looked official to him, and he entered a six-digit code “confirmation code” sent by text to finish the process.
That “confirmation code” was actually a fresh two-factor authentication code. With that finally in hand, the scammers signed in. Moret received a notice that a new device had logged into his account. Moret quickly reset his password again, which kicked them out and stopped the attack.
Maybe you didn’t get a scam call from “Emma” or “Carl” at Wal-Mart, but plenty of people did. Around eight million in all. Now the Federal Communications Commission’s (FCC) Enforcement Bureau wants to put a stop to them.
“Emma” and “Carl” are in fact a couple of AI voices fronting a scam framed around the bogus purchase of a PlayStation. It’s garnered its share of complaints, so much that the FCC has stepped in. It alleges that SK Teleco, a voice service provider, provisioned at least some of these calls, and that it must immediately stop.
According to the FCC, the call plays out like this:
“A preauthorized purchase of PlayStation 5 special edition with Pulse 3D headset is being ordered from your Walmart account for an amount of 919 dollars 45 cents. To cancel your order or to connect with one of our customer support representatives, please press ‘1.’ Thank you.”
Pressing “1” connects you to a live operator who asks for personal identifiable such as Social Security numbers to cancel the “purchase.”
If you were wondering, it’s unlawful to place calls to cellphones containing artificial or prerecorded voice messages absent an emergency purpose or prior express consent. According to the FCC’s press release, SK Teleco didn’t respond to a request to investigate the calls. The FCC further alleges that it’s unlikely the company has any such consent.
Per the FCC, “If SK Teleco fails to take swift action to prevent scam calls, the FCC will require all other providers to no longer accept call traffic from SK Teleco.”
We’ll see how this plays out, yet it’s a good reminder to report scam calls. When it comes to any kind of scam, law enforcement and federal agencies act on complaints.
Here’s a quick list of a few stories that caught our eye this week:
Scammers pose as law enforcement, threaten jail time if you don’t pay (with audio)
Deepfake of North Carolina lawmaker used in award-winning Brazilian Whirlpool video
What happens when you kick millions of teens off social media? Australia’s about to find out
We’ll see you next Friday with more updates, scam news, and ways you can stay safer out there.
The post This Week in Scams: Phony AI Ads, Apple Account Takeover Attempts, and a PlayStation Scam appeared first on McAfee Blog.
A sprawling academic cheating network turbocharged by Google Ads that has generated nearly $25 million in revenue has curious ties to a Kremlin-connected oligarch whose Russian university builds drones for Russia’s war against Ukraine.
The Nerdify homepage.
The link between essay mills and Russian attack drones might seem improbable, but understanding it begins with a simple question: How does a human-intensive academic cheating service stay relevant in an era when students can simply ask AI to write their term papers? The answer – recasting the business as an AI company – is just the latest chapter in a story of many rebrands that link the operation to Russia’s largest private university.
Search in Google for any terms related to academic cheating services — e.g., “help with exam online” or “term paper online” — and you’re likely to encounter websites with the words “nerd” or “geek” in them, such as thenerdify[.]com and geekly-hub[.]com. With a simple request sent via text message, you can hire their tutors to help with any assignment.
These nerdy and geeky-branded websites frequently cite their “honor code,” which emphasizes they do not condone academic cheating, will not write your term papers for you, and will only offer support and advice for customers. But according to This Isn’t Fine, a Substack blog about contract cheating and essay mills, the Nerdify brand of websites will happily ignore that mantra.
“We tested the quick SMS for a price quote,” wrote This Isn’t Fine author Joseph Thibault. “The honor code references and platitudes apparently stop at the website. Within three minutes, we confirmed that a full three-page, plagiarism- and AI-free MLA formatted Argumentative essay could be ours for the low price of $141.”
A screenshot from Joseph Thibault’s Substack post shows him purchasing a 3-page paper with the Nerdify service.
Google prohibits ads that “enable dishonest behavior.” Yet, a sprawling global essay and homework cheating network run under the Nerdy brands has quietly bought its way to the top of Google searches – booking revenues of almost $25 million through a maze of companies in Cyprus, Malta and Hong Kong, while pitching “tutoring” that delivers finished work that students can turn in.
When one Nerdy-related Google Ads account got shut down, the group behind the company would form a new entity with a front-person (typically a young Ukrainian woman), start a new ads account along with a new website and domain name (usually with “nerdy” in the brand), and resume running Google ads for the same set of keywords.
UK companies belonging to the group that have been shut down by Google Ads since Jan 2025 include:
–Proglobal Solutions LTD (advertised nerdifyit[.]com);
–AW Tech Limited (advertised thenerdify[.]com);
–Geekly Solutions Ltd (advertised geekly-hub[.]com).
Currently active Google Ads accounts for the Nerdify brands include:
-OK Marketing LTD (advertising geekly-hub[.]net), formed in the name of Olha Karpenko, a young Ukrainian woman;
–Two Sigma Solutions LTD (advertising litero[.]ai), formed in the name of Olekszij (Alexey) Pokatilo.
Google’s Ads Transparency page for current Nerdify advertiser OK Marketing LTD.
Mr. Pokatilo has been in the essay-writing business since at least 2009, operating a paper-mill enterprise called Livingston Research alongside Alexander Korsukov, who is listed as an owner. According to a lengthy account from a former employee, Livingston Research mainly farmed its writing tasks out to low-cost workers from Kenya, Philippines, Pakistan, Russia and Ukraine.
Pokatilo moved from Ukraine to the United Kingdom in Sept. 2015 and co-founded a company called Awesome Technologies, which pitched itself as a way for people to outsource tasks by sending a text message to the service’s assistants.
The other co-founder of Awesome Technologies is 36-year-old Filip Perkon, a Swedish man living in London who touts himself as a serial entrepreneur and investor. Years before starting Awesome together, Perkon and Pokatilo co-founded a student group called Russian Business Week while the two were classmates at the London School of Economics. According to the Bulgarian investigative journalist Christo Grozev, Perkon’s birth certificate was issued by the Soviet Embassy in Sweden.
Alexey Pokatilo (left) and Filip Perkon at a Facebook event for startups in San Francisco in mid-2015.
Around the time Perkon and Pokatilo launched Awesome Technologies, Perkon was building a social media propaganda tool called the Russian Diplomatic Online Club, which Perkon said would “turbo-charge” Russian messaging online. The club’s newsletter urged subscribers to install in their Twitter accounts a third-party app called Tweetsquad that would retweet Kremlin messaging on the social media platform.
Perkon was praised by the Russian Embassy in London for his efforts: During the contentious Brexit vote that ultimately led to the United Kingdom leaving the European Union, the Russian embassy in London used this spam tweeting tool to auto-retweet the Russian ambassador’s posts from supporters’ accounts.
Neither Mr. Perkon nor Mr. Pokatilo replied to requests for comment.
A review of corporations tied to Mr. Perkon as indexed by the business research service North Data finds he holds or held director positions in several U.K. subsidiaries of Synergy, Russia’s largest private education provider. Synergy has more than 35,000 students, and sells T-shirts with patriotic slogans such as “Crimea is Ours,” and “The Russian Empire — Reloaded.”
The president of Synergy is Vadim Lobov, a Kremlin insider whose headquarters on the outskirts of Moscow reportedly features a wall-sized portrait of Russian President Vladimir Putin in the pop-art style of Andy Warhol. For a number of years, Lobov and Perkon co-produced a cross-cultural event in the U.K. called Russian Film Week.
Synergy President Vadim Lobov and Filip Perkon, speaking at a press conference for Russian Film Week, a cross-cultural event in the U.K. co-produced by both men.
Mr. Lobov was one of 11 individuals reportedly hand-picked by the convicted Russian spy Marina Butina to attend the 2017 National Prayer Breakfast held in Washington D.C. just two weeks after President Trump’s first inauguration.
While Synergy University promotes itself as Russia’s largest private educational institution, hundreds of international students tell a different story. Online reviews from students paint a picture of unkept promises: Prospective students from Nigeria, Kenya, Ghana, and other nations paying thousands in advance fees for promised study visas to Russia, only to have their applications denied with no refunds offered.
“My experience with Synergy University has been nothing short of heartbreaking,” reads one such account. “When I first discovered the school, their representative was extremely responsive and eager to assist. He communicated frequently and made me believe I was in safe hands. However, after paying my hard-earned tuition fees, my visa was denied. It’s been over 9 months since that denial, and despite their promises, I have received no refund whatsoever. My messages are now ignored, and the same representative who once replied instantly no longer responds at all. Synergy University, how can an institution in Europe feel comfortable exploiting the hopes of Africans who trust you with their life savings? This is not just unethical — it’s predatory.”
This pattern repeats across reviews by multilingual students from Pakistan, Nepal, India, and various African nations — all describing the same scheme: Attractive online marketing, promises of easy visa approval, upfront payment requirements, and then silence after visa denials.
Reddit discussions in r/Moscow and r/AskARussian are filled with warnings. “It’s a scam, a diploma mill,” writes one user. “They literally sell exams. There was an investigation on Rossiya-1 television showing students paying to pass tests.”
The Nerdify website’s “About Us” page says the company was co-founded by Pokatilo and an American named Brian Mellor. The latter identity seems to have been fabricated, or at least there is no evidence that a person with this name ever worked at Nerdify.
Rather, it appears that the SMS assistance company co-founded by Messrs. Pokatilo and Perkon (Awesome Technologies) fizzled out shortly after its creation, and that Nerdify soon adopted the process of accepting assignment requests via text message and routing them to freelance writers.
A closer look at an early “About Us” page for Nerdify in The Wayback Machine suggests that Mr. Perkon was the real co-founder of the company: The photo at the top of the page shows four people wearing Nerdify T-shirts seated around a table on a rooftop deck in San Francisco, and the man facing the camera is Perkon.
Filip Perkon, top right, is pictured wearing a Nerdify T-shirt in an archived copy of the company’s About Us page. Image: archive.org.
Where are they now? Pokatilo is currently running a startup called Litero.Ai, which appears to be an AI-based essay writing service. In July 2025, Mr. Pokatilo received pre-seed funding of $800,000 for Litero from an investment program backed by the venture capital firms AltaIR Capital, Yellow Rocks, Smart Partnership Capital, and I2BF Global Ventures.
Meanwhile, Filip Perkon is busy setting up toy rubber duck stores in Miami and in at least three locations in the United Kingdom. These “Duck World” shops market themselves as “the world’s largest duck store.”
This past week, Mr. Lobov was in India with Putin’s entourage on a charm tour with India’s Prime Minister Narendra Modi. Although Synergy is billed as an educational institution, a review of the company’s sprawling corporate footprint (via DNS) shows it also is assisting the Russian government in its war against Ukraine.
Synergy University President Vadim Lobov (right) pictured this week in India next to Natalia Popova, a Russian TV presenter known for her close ties to Putin’s family, particularly Putin’s daughter, who works with Popova at the education and culture-focused Innopraktika Foundation.
The website bpla.synergy[.]bot, for instance, says the company is involved in developing combat drones to aid Russian forces and to evade international sanctions on the supply and re-export of high-tech products.
A screenshot from the website of synergy,bot shows the company is actively engaged in building armed drones for the war in Ukraine.
KrebsOnSecurity would like to thank the anonymous researcher NatInfoSec for their assistance in this investigation.
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Whether you're logging into your bank, health insurance, or even your email, most services today do not live by passwords alone. Now commonplace, multifactor authentication (MFA) requires users to enter a second or third proof of identity. However, not all forms of MFA are created equal, and the one-time passwords orgs send to your phone have holes so big you could drive a truck through them.…
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Posted by Yuffie Kisaragi via Fulldisclosure on Dec 05
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I've been experimenting with a CDP-based technique for tracing the origin of JavaScript values inside modern, framework-heavy SPAs.
The method, called Breakpoint-Driven Heap Search (BDHS), performs step-out-based debugger pauses, captures a heap snapshot at each pause, and searches each snapshot for a target value (object, string, primitive, nested structure, or similarity signature).
It identifies the user-land function where the value first appears, avoiding framework and vendor noise via heuristics.
Alongside BDHS, I also implemented a Live Object Search that inspects the live heap (not just snapshots), matches objects by regex or structure, and allows runtime patching of matched objects.
This is useful for analyzing bot-detection logic, state machines, tainted values, or any internal object that never surfaces in the global scope.
Potential use cases: SPA reverse engineering, DOM XSS investigations, taint analysis, anti-bot logic tracing, debugging minified/obfuscated flows, and correlating network payloads with memory structures.
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Hi, during my work as a pentester, we have developed internal tooling for different types of tests. We thought it would be helpful to release a web version of our SSRF payload generator which has come in handy many times.
It is particularly useful for testing PDF generators when HTML tags may be inserted in the final document. We're aiming for a similar feel to PortSwigger's XSS cheat sheet. The generator includes various payload types for different SSRF scenarios with multiple encoding options.
It works by combining different features like schemes (dict:, dns:, file:, gopher:, etc...) with templates (<img src="{u}">, <meta http-equiv="refresh" content="0;url={u}">, etc...), and more stuff like local files, static hosts. The result is a large amount of payloads to test.
Enter your target URL for callbacks, "Generate Payloads" then copy everything to the clipboard and paste into Burp. Note that there are a number of predefined hosts as well like 127.0.0.1.
No tracking or ads on the site, everything is client-side.
Best Regards!
Edit: holy s**t the embed image is large
AI/LLM Red Team Handbook and Field Manual
I've published a handbook for penetration testing AI systems and LLMs: https://cph-sec.gitbook.io/ai-llm-red-team-handbook-and-field-manual
Contents:
Target audience: pentesters, red teamers, and security researchers assessing AI-integrated applications, chatbots, and LLM implementations.
Open to feedback and contributions from the community.
Often, beginners and even experienced phishers confuse the approach they are using when phishing, often resulting in failing campaigns and bad results. I did a little writeup to describe each approach.
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Twelve years (and one day) since launching Have I Been Pwned, it's now a service that Charlotte and I live and breathe every day. From the first thing every morning to the last thing each day, from holidays to birthdays, in sickness and in heal... wait a minute - did we marry each other or a data breach service?! We decided to do a 12th-birthday special together today to give everyone a bit more insight into what she does and what life is like running this service. It's a different weekly vid, and we really hope you enjoy watching it 😊
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