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Suspicious Polyfill login prompts pop up on Toshiba, Muji websites
Toshiba and Muji warned that suspicious sign-in prompts appearing on their websites, generated by the polyfill.io service, could be used to harvest credentials. Both companies suspended the service and advised users who saw the prompts to cancel and change passwords. The issue, linked to Polyfill’s historically compromised CDN, has affected other brands and even Samsung devices in late May to early June 2026, though no confirmed data breaches have been reported yet.
Chinese APT deploys new malware to keep access to hacked networks
Chinese APT UNC5221 (VerdantBamboo) quietly maintained access to multiple networks for at least 18 months, compromising MSPs and then infiltrating Microsoft 365 using the Brickstorm backdoor. The group introduced new malware—Plenet (Grimbolt) for Synology NAS and AgentPSD as a fallback reverse shell—after breaching and pivoting from the MSP into the victim environment, also deploying a BSD Brickstorm variant on pfSense. The operation, spanning 2023–2025 and evolving from Golang to Rust, demonstrates a highly sophisticated, cross‑platform campaign that evades detections; researchers published IOCs to aid defenders.
California Man Sentenced to More Than 26 Years for Fentanyl and Meth Trafficking on Nemesis Market (Dark Web)
California man Darren Hughes of San Jose was sentenced to over 26 years in federal prison for trafficking fentanyl and methamphetamine on Nemesis Market, a leading dark web marketplace. Prosecutors say he offered free meth samples and, in 2023, sold meth and fentanyl pills to an undercover agent for cryptocurrency; he was arrested June 28, 2023 in Redwood City. Nemesis Market launched in 2021 and was dismantled by German and U.S. authorities on March 20, 2024 after handling hundreds of thousands of orders. U.S. Attorney Andrew S. Boutros and IRS-CI SAC Adam Jobes touted the crackdown on online drug trafficking.
Cisco warns of unpatched SD-WAN zero-day exploited in attacks (CVE-2026-20245)
Cisco warns of a high-severity, unpatched zero-day in Catalyst SD-WAN Manager (CVE-2026-20245) that is actively exploited to escalate privileges to root across all deployment types. Exploitation requires netadmin privileges—typically via valid credentials or by chaining with CVE-2026-20182 or CVE-2026-20127—and can be triggered by uploading a crafted file. There is no patch yet; admins should upgrade to the fixed release for CVE-2026-20182 (May 14) and monitor /var/log/scripts.log for IOCs, contacting Cisco TAC if a compromise is suspected. Cisco notes this follows a pattern of previously exploited SD-WAN vulnerabilities.
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TechLogHub Weekly: Top Dev Tools — May 27, 2026
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