Malwarebytes roundup highlights a week of security stories

Malwarebytes Labs’ weekly roundup for 26 October to 1 November 2026 lists stories published during the week, covering browser extensions, cryptocurrency theft, data breaches, software updates, scams and privacy. It does not provide further reporting or details on those topics in the roundup itself.

The listed stories include a report that fake PDF and search tools hijacked searches for 13.4 million Chrome users, and coverage of a cryptocurrency theft described in its headline as the largest ever, with $6.3 billion stolen. Other headlines concern data reportedly stolen from 41,000 Homeland Security workers, malicious Firefox extensions impersonating crypto wallets, and a security update for older iPhones and iPads.

The roundup also points to coverage of serious security flaws fixed by Chrome and Firefox updates, a breach involving Quest patient records, and a researcher’s claim that some Samsung TVs may listen through soundbars.