Login
The proliferation of applications across hybrid and multicloud environments continues at a blistering pace. For the most part, there is no fixed perimeter, applications and environments are woven… Read more on Cisco Blogs
Spoofy is a program that checks if a list of domains can be spoofed based on SPF and DMARC records. You may be asking, "Why do we need another tool that can check if a domain can be spoofed?"
Well, Spoofy is different and here is why:
- Authoritative lookups on all lookups with known fallback (Cloudflare DNS)
- Accurate bulk lookups
- Custom, manually tested spoof logic (No guessing or speculating, real world test results)
- SPF lookup counter
Spoofy requires Python 3+. Python 2 is not supported. Usage is shown below:
FreshRSS 
Usage:
./spoofy.py -d [DOMAIN] -o [stdout or xls]
OR
./spoofy.py -iL [DOMAIN_LIST] -o [stdout or xls]
Install Dependencies:
pip3 install -r requirements.txt(The spoofability table lists every combination of SPF and DMARC configurations that impact deliverability to the inbox, except for DKIM modifiers.) Download Here
The creation of the spoofability table involved listing every relevant SPF and DMARC configuration, combining them, and then conducting SPF and DMARC information collection using an early version of Spoofy on a large number of US government domains. Testing if an SPF and DMARC combination was spoofable or not was done using the email security pentesting suite at emailspooftest using Microsoft 365. However, the initial testing was conducted using Protonmail and Gmail, but these services were found to utilize reverse lookup checks that affected the results, particularly for subdomain spoof testing. As a result, Microsoft 365 was used for the testing, as it offered greater control over the handling of mail.
After the initial testing using Microsoft 365, some combinations were retested using Protonmail and Gmail due to the differences in their handling of banners in emails. Protonmail and Gmail can place spoofed mail in the inbox with a banner or in spam without a banner, leading to some SPF and DMARC combinations being reported as "Mailbox Dependent" when using Spoofy. In contrast, Microsoft 365 places both conditions in spam. The testing and data collection process took several days to complete, after which a good master table was compiled and used as the basis for the Spoofy spoofability logic.
This tool is only for testing and academic purposes and can only be used where strict consent has been given. Do not use it for illegal purposes! It is the end user’s responsibility to obey all applicable local, state and federal laws. Developers assume no liability and are not responsible for any misuse or damage caused by this tool and software.
Lead / Only programmer & spoofability logic comprehension upgrades & lookup resiliency system / fix (main issue with other tools) & multithreading & feature additions: Matt Keeley
DMARC, SPF, DNS insights & Spoofability table creation/confirmation/testing & application accuracy/quality assurance: calamity.email / eman-ekaf
Logo: cobracode
Tool was inspired by Bishop Fox's project called spoofcheck.
Cisco Live is the premier destination for Cisco customers and partners to gain knowledge and build community. Our teams work hard to deliver education and inspiration, ignite creativity, deliver practical know-how, and accelerate the connections that fuel your digital future.
The Cisco Secure team is excited to share our expertise to help power the strategies – and safety – of your organization.
In 2023, the threat landscape will evolve to one that sees attacks on every surface, from criminals who are opportunistic, yet laser-focused on their goal. The attacks themselves could be email-borne, directly targeted, socially based, or a mix of all three.
Criminals will target vulnerabilities, operational deficiencies, suppliers, and business partners, as a means of accomplishing their goals. They will use the target’s own environment and take advantage of existing people and technology problems, including alert fatigue and staffing shortages.
To face this reality and address the needs of organizations both large and small, Cisco will continue to focus on education and innovation in the areas of preventing insider threats, providing consistent and informed alerts, enabling actionable intelligence, and delivering solutions to implement a zero-trust security framework.
As the organization that pioneered networking, we are driven to secure every connection, providing end-to-end protection for users and devices across multiple clouds and networks with a seamless experience.
As our vision for the integrated Cisco Security Cloud evolves, we’re continuing to challenge existing models and unify security and networking, with foundational elements that execute on this vision. From verified push – which protects organizations from MFA-focused phishing attacks – to Wi-Fi Fingerprint, and Remembered Devices, the performance enhancements with Enterprise Single Sign-on and Cisco+ Secure Connect, we continue to meet our customers where they are, offering true zero trust, with frictionless experiences for the hybrid workforce.
We’re excited to celebrate the following innovations and updates announced at Cisco Live EMEA:
Finding the balance between usability and security is now easier than ever. With Risk-Based Authentication, users have the access they need, secured by real-time contextual signals. Organizations can increase security efficacy by dynamically adjusting authentication requirements based on risk levels and by enabling safer end-user behavior. Risk-based authentication now includes wi-fi fingerprint, remembered device, and verified push features, which work together to reduce risk while preserving user experience by only requesting additional interaction for suspicious logins or a change in risk.
Our Enterprise Ready Single Sign-on expands Duo SSO with three new capabilities to easily connect single sign-on to modern apps and empower end users. By adding major protocol support, improved admin tooling, and SSO on demand password resets, organizations enable easier and more secure access from anywhere.
Cisco SD-WAN customers can now enjoy all the benefits of a turnkey, single-vendor SASE solution that brings together industry-leading networking with security: Cisco+ Secure Connect. This new integration gives Cisco SD-WAN (powered by Viptela) customers fast, secure private application and internet access, enabling them to deliver a secure experience, anywhere work happens.
We are also announcing the introduction of industry-first Business Risk Observability, an enhancement of our Full-Stack Observability application security solution. Available through Cisco Secure Application, which is integrated into Cisco AppDynamics, it provides a business risk scoring solution which brings together Kenna Risk Meter score distribution and Business Transactions from Cisco AppDynamics and integrates with Panoptica for API security and Talos for threat intelligence.
The initial findings from our first Cybersecurity Readiness Index reveal that while technology to devices is widely adopted, more progress is needed to protect identity, networks and applications. The report assessed the preparedness of companies around the world to safeguard against cyber threats in the current environment. See our key findings and security readiness trends, with the full report launching in the coming weeks.
As we navigate 2023, we will continue to face uncertainties and challenges. We are fully committed to our customers and partners in the journey to provide security resilience, supporting a frictionless user experience, and solutions threat intelligence that work to continually minimize risk.
We’d love to hear what you think. Ask a Question, Comment Below, and Stay Connected with Cisco Secure on social!
Cisco Secure Social Channels
Introduction Open-source software helped to revolutionize the way that applications are built by professionals and enthusiasts alike. Being able to borrow a non-proprietary library to quickly prototype and build an application not only accelerates progress in projects, but also makes things easier to work with. Open-source libraries when creating applications is not the only positive […]
The post Open-source application security flaws: What you should know and how to spot them appeared first on Infosec Resources.
