Quarterly Report: Incident Response trends from Spring 2021
By David Liebenberg and Caitlin Huey. While the security community made a great effort to warn users of the exploitation of several Microsoft Exchange Server zero-day vulnerabilities, it was still the biggest threat Cisco Talos Incident Response (CTIR) saw this past quarter. The
Vulnerability Spotlight: Code execution vulnerability in Google Web Audio API
Piotr Bania of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered two use-after-free vulnerabilities in Google’s Web Audio API that an adversary could exploit to execute remote code on the victim machine. Web Audio API is a high-le
Microsoft Patch Tuesday for June 2021 — Snort rules and prominent vulnerabilities
By Jon Munshaw, with contributions from Edmund Brumaghin. Microsoft released its monthly security update Tuesday, disclosing 51 vulnerabilities across its suite of products, breaking last month’s 16-month record of the fewest vulnerabilities disclosed in a month by the company.
Intelligence-driven disruption of ransomware campaigns
By Neil Jenkins and Matthew Olney. Note: Our guest co-author, Neil Jenkins, is the Chief Analytic Officer at the Cyber Threat Alliance. He leads the CTA's analytic efforts, focusing on the development of threat profiles, adversary playbooks and other analysis using the threa
Threat Roundup for May 28 to June 4
Today, Talos is publishing a glimpse into the most prevalent threats we've observed between May 28 and June 4. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key
Threat Source newsletter (June 3, 2021)
Newsletter compiled by Jon Munshaw. Good afternoon, Talos readers. If you didn't catch us live yesterday, we've uploaded the full version of our stream on Discord and Slack malware to our YouTube page. Chris Neal from Talos Outreach walked through his recent research in
Necro Python bot adds new exploits and Tezos mining to its bag of tricks
By Vanja Svajcer, with contributions from Caitlin Huey and Kendall McKay. News summary * Some malware families stay static in terms of their functionality. But a newly discovered malware campaign utilizing the Necro Python bot shows this actor is adding new functionality and
Vulnerability Spotlight: Use-after-free vulnerability in WebKit
Marcin Towalski of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw. The WebKit browser engine contains a use-after-free vulnerability in its GraphicsContext function. A malicious web page code could trigger a use-after-free error, which could lead to a potentia
Vulnerability Spotlight: A deep dive into macOS SMB server
By Aleksandar Nikolich. Executive summary Cisco Talos recently discovered multiple vulnerabilities in macOS’s implementation of SMB server. An adversary could exploit these vulnerabilities to carry out a variety of malicious actions, including revealing sensitive information o