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THE DAILY INDEX

Technology, AI, software, security, crypto and business

ATTACKS & VULNERABILITIES

TLDR InfoSec

RELIABLE SYSTEM CALL INTERCEPTION

Traditionally, ptrace is used for system call monitoring, modifying, and faking but this mechanism suffers from being very slow as it requires two traps for each system call. The author presents an alternative mechanism that uses seccomp user notify and BPF filters to replace this functionality. The author notes that this technique suffers from time-of-check to time-of-use attacks and should not be used for security-critical decisions.

CISA DIRECTOR SAYS THREAT HUNTERS SPOTTED SALT TYPHOON ON FEDERAL NETWORKS BEFORE TELCO COMPROMISES

CISA's director Jen Easterly mentioned that threat hunters found suspicious activity from Salt Typhoon on federal networks before realizing it was part of a larger Chinese hacking campaign targeting U.S. telecommunications. By identifying and seizing virtual private servers leased by the hackers, CISA gained insight into the extent of the hacking campaign against telecommunications companies and provided assistance to potential victims. The incident highlights the ongoing challenge of defending critical infrastructure from foreign adversaries like China and the need for improved cybersecurity measures in vulnerable sectors like telecommunications.

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