Endpoint security software faces a tough challenge — it needs to be able to rapidly distinguish between desired and unwanted behavior with few false positives and false negatives, and attackers work hard to obfuscate (or cloak) their malicious code to prevent detection by security scanners. To maximize protection, security software wants visibility into attack chainsContinue reading “Defensive Technology: Antimalware Scan Interface (AMSI)”
Tag Archives: security
Content-Blocking in Manifest v3
I’ve written about selectively blocking content in browsers several times over the last two decades. In this post, I don’t aim to convince you that ad-blocking is good or bad, instead focusing on one narrow topic. Circa 2006, I was responsible for changing IE so that you could simply add an advertising site to theContinue reading “Content-Blocking in Manifest v3”
Authenticode in 2024
My 2021-2024 Authenticode certificate expired yesterday, so I began the process of getting a replacement last week. As in past years, I again selected a 3 year OV certificate from DigiCert. Validation was straightforward. After placing my order, I got a request for high-resolution photos of me holding my ID (I sent my passport andContinue reading “Authenticode in 2024”
Attack Techniques: Full-Trust Script Downloads
While it’s common to think of cyberattacks as being conducted by teams of elite cybercriminals leveraging the freshest 0-day attacks against victims’ PCs, the reality is far more mundane. Most attacks start as social engineering attacks: abusing a user’s misplaced trust. Most attackers don’t hack in, they log in. The most common cyberattack is phishing:Continue reading “Attack Techniques: Full-Trust Script Downloads”
ERR_BLOCKED_BY_CLIENT and HTML5 Sandbox
Recently, many Microsoft employees taking training courses have reported problems accessing documents linked to in those courses in Chrome and Edge. In Edge, the screen looks like this: But the problem isn’t limited to Microsoft’s internal training platform, and can be easily reproduced in Chrome: What’s going on? There are a number of root causesContinue reading “ERR_BLOCKED_BY_CLIENT and HTML5 Sandbox”
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