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GrapheneOS' rewritten Messages app is released
GrapheneOS published version 13 of its rewritten Messaging app, a messaging tool from the privacy-hardened Android OS project.
GrapheneOS released version 13 of its rewritten Messaging application on GitHub. The release surfaced via a Hacker News thread with 61 points and 22 comments. The provided text contains only the release listing, with no vulnerability or exploit details; GrapheneOS is a privacy- and security-focused Android OS project, making the release relevant to mobile privacy tooling.
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Bulk AbuseIPDB reporting using command-line tools
A blogger shows how to bulk-report distributed botnet IPs scraping a self-hosted Gitea instance to AbuseIPDB using bash, awk, and jq.
The author's self-hosted Gitea instance was scraped by distributed bots using random IPs worldwide and randomized, often nonexistent User-Agent strings, generating heavy request load for days. The write-up demonstrates filtering Traefik access logs (CLF and JSON) with grep, awk, and jq to extract offending IPs, tagging them with AbuseIPDB category 19 (Bad Web Bot), deduplicating them, and building a CSV for the Bulk Reporter tool. Reports can then be submitted through the AbuseIPDB bulk-report API, respecting the 5,000-report daily limit.
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Show HN: Geiger – See every AI agent on your machine and what it can touch
Geiger, a new open-source tool, surfaces AI agents running on a machine and the files and resources they can access.
Geiger launched on Hacker News as an open-source utility that shows every AI agent operating on a local machine and the scope of what each agent can touch. The Show HN post drew early community attention with 21 points and 11 comments, with the code hosted on GitHub under the Atomburstofficial account.
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GrapheneOS Overhauled Default Apps and Secure Clipboard
GrapheneOS announced an overhaul of its default apps and a redesigned secure clipboard in its privacy-focused Android distribution.
The GrapheneOS project posted on Mastodon that it has "overhauled default apps and secure clipboard" in its privacy and security hardened Android OS. The provided text contains only the announcement title and engagement figures, without release notes or technical specifics. Changes to built-in apps and clipboard handling in GrapheneOS are typically relevant to Android privacy and mobile security practitioners.
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WhatsApp Adds Multiple Passkeys for Phishing-Resistant Sign
Meta now allows multiple passkeys per WhatsApp account and upgraded two-step verification to full passwords, hardening sign-in for more than 1 billion users.
Meta announced support for multiple passkeys on a single WhatsApp account for iOS and Android, noting more than 1 billion people already use a passkey to log in. WhatsApp also upgraded two-step verification from a six-digit PIN to a full alphanumeric password and added Android call context such as origin location, contact status, and shared groups. The features aim to harden account sign-in against phishing and one-time passcode interception and to counter caller scams relying on urgency.
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Microsoft Defender's Own Driver Can Be Weaponized to Delete Security Software at Boot
Check Point revealed BTR Reforged, a technique weaponizing Microsoft Defender's built-in BTR.sys driver to delete security software at boot without exploiting any vulnerability.
Check Point Research disclosed BTR Reforged, a technique that abuses BTR.sys, a legitimately signed Windows Defender boot-time remediation driver, to perform arbitrary kernel-level file and registry operations on Windows 7 through Windows 11 25H2 without exploiting a software flaw. The BTR_CLI proof-of-concept tool, presented at Black Hat USA 2026 and DEF CON 34, installs the driver via direct registry writes and executes deletions during the boot-time 'golden window' before Defender's user-mode services start, demonstrated by deleting the full Defender stack on a patched Windows 11 machine. Exploitation requires SeLoadDriverPrivilege; Microsoft confirmed it does not meet criteria for immediate servicing and no patch is planned. No evidence of real-world abuse was found, and related indicators of compromise via Sysmon events were published.
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