TL;DR JARM is an active Transport Layer Security (TLS) server fingerprinting tool. Scanning with JARM provides the ability to identify and group malicious servers on the Internet. JARM is available here: https://github.com/salesforce/jarm JARM fingerprints can be used to: Quickly verify that all servers in a group have the same TLS configuration.Group disparate servers on the internet by configura
Security is a concern for any public facing web application. Good development practices can assist with defending against attempts from users looking to expose data or bring down an app. However, sometimes not all attack vectors are handled and new exploits are bound to be discovered. This is where security software can assist with monitoring and preventing unforeseen attacks. So what if you could
In the world of phishing defense, email reputation is an incredibly valuable, but often overlooked, piece of intelligence. While building Sublime, a detection and response platform for email security, we've encountered two principal phishing defense applications. First, for identifying email addresses created by threat actors to conduct malicious activity, and second, for identifying high reputati
Several organizations maintain and publish free blocklists of IP addresses and URLs of systems and networks suspected in malicious activities on-line. Some of these lists have usage restrictions: Artists Against 419: Lists fraudulent websitesATLAS from Arbor Networks: Registration required by contacting ArborBlackweb Project: Optimized for SquidCLEAN-MX Realtime Database: XML output availableCriti
If you're trying to send mail to an Office 365 recipient and the mail has been rejected because of your sending IP address, follow these steps to submit a delisting request. Senders are responsible for making sure that their mail from this IP address isn't abusive or malicious. Learn More Step 1: Send verification Step 2: Confirm email address 3. Delist IP Step 1: Provide your email address and th
The Python security team removed two trojanized Python libraries from PyPI (Python Package Index) that were caught stealing SSH and GPG keys from the projects of infected developers. The two libraries were created by the same developer and mimicked other more popular libraries -- using a technique called typosquatting to register similarly-looking names. The first is "python3-dateutil," which imit
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