Malicious QR Codes: How big of a problem is it, really?
QR codes are disproportionately effective at bypassing most anti-spam filters. Talos discovered two effective methods for defanging malicious QR codes, a necessary step to make them safe for consumption.
Simple Mail Transfer Pirates: How threat actors are abusing third-party infrastructure to send spam
Many spammers have elected to attack web pages and mail servers of legitimate organizations, so they may use these “pirated” resources to send unsolicited email.
Spammers abuse Google Forms’ quiz to deliver scams
Cisco Talos has recently observed an increase in spam messages abusing a feature of quizzes created within Google Forms.
What's in a name? Strange behaviors at top-level domains creates uncertainty in DNS
Confusion over whether some name is a public DNS name or another private resource can cause sensitive data to fall into the hands of unintended recipients.
How threat actors are using AI and other modern tools to enhance their phishing attempts
Tools like ChatGPT aren't making social engineering attacks any more effective, but it does make it faster for actors to write up phishing emails.
Emotet resumes spam operations, switches to OneNote
Since returning, Emotet has leveraged several distinct infection chains, indicating that they are modifying their approach based on their perceived success in infecting new systems.
HTML smugglers turn to SVG images
* HTML smuggling is a technique attackers use to hide an encoded malicious script within an HTML email attachment or webpage. * Once a victim receives the email and opens the attachment, their browser decodes and runs the script, which then assembles a malicious payload directl
Developer account body snatchers pose risks to the software supply chain
Cisco Talos examined several frequently used code repositories. We looked specifically at the security afforded to developer accounts, and how difficult it would be for an attacker to take over a developer account.
Attackers target Ukraine using GoMet backdoor
Executive summary Since the Russian invasion of Ukraine began, Ukrainians have been under a nearly constant barrage of cyber attacks. Working jointly with Ukrainian organizations, Cisco Talos has discovered a fairly uncommon piece of malware targeting Ukraine — this time aimed a