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Every 4 hours

Cyber

Original briefings from the security press, rewritten for operators. Each story keeps the date of the report it is based on, links the identifiers it discusses, and points back to the original publication.

Threat intelligence

Trackers and reporting desks followed on the same four-hour update. New public reports are rewritten into the briefings below.

PrioritySourceWebsiteInformation
Ransomware.liveWebsiteRansomware.liveInformationRansomware groups, victims, incidents
The DFIR ReportWebsiteThe DFIR ReportInformationDetailed intrusion investigations
SANS Internet Storm CenterWebsiteSANS ISCInformationAttack observations and incident analysis
abuse.ch ThreatFoxWebsiteThreatFoxInformationIndicators of compromise
abuse.ch URLhausWebsiteURLhausInformationMalware distribution infrastructure
abuse.ch MalwareBazaarWebsiteMalwareBazaarInformationMalware hashes and metadata
abuse.ch Feodo TrackerWebsiteFeodo TrackerInformationBotnet command-and-control infrastructure
AlienVault OTXWebsiteAlienVault OTXInformationCommunity threat-intelligence indicators
PhishTankWebsitePhishTankInformationPhishing intelligence
Shadowserver FoundationWebsiteShadowserverInformationInternet exposure and threat reporting

  1. Oct 16, 2026 · The Hacker News

    Critical OpenBSD Vulnerability Exploited Through Legacy Bug Chaining

    A newly discovered exploit demonstrates a local privilege escalation vulnerability in OpenBSD, leveraging a decades-old bug to bypass security measures.

    What changed

    Researchers have unveiled a local privilege escalation exploit affecting OpenBSD 7.9. This exploit successfully combines a 37-year-old integer overflow vulnerability with a recent kernel flaw, enabling attackers to gain root access.

    The exploit circumvents OpenBSD's advanced security features, including the KARL kernel-address randomization and hardware protections such as SMAP and SMEP.

    Who is affected

    The vulnerability primarily impacts users and organizations utilizing OpenBSD 7.9. The following groups should take immediate notice:

    System administrators and security teams managing OpenBSD environments must be vigilant.

    • OpenBSD users and administrators running version 7.9
    • Organizations relying on OpenBSD for critical infrastructure
    • Security professionals monitoring for privilege escalation threats

    What to do

    Affected parties should prioritize reviewing their OpenBSD installations for potential exploitation. Immediate actions include updating systems and monitoring for unusual activity.

    It is crucial to stay informed about further developments and patches released by the OpenBSD team.

    • Apply any available security patches from OpenBSD promptly.
    • Monitor system logs for signs of unauthorized access or privilege escalation.
    • Review security configurations to ensure compliance with best practices.

    Original report

  2. Jul 10, 2025 · ZeroDay Catalog

    Critical Remote Code Execution Vulnerability in Wing FTP Server

    A severe vulnerability in Wing FTP Server allows for remote code execution through improper handling of null byte characters, affecting versions prior to 7.4.4.

    What changed

    Wing FTP Server versions before 7.4.4 are affected by a vulnerability that improperly neutralizes null byte characters ('\0'). This flaw can lead to the injection of arbitrary Lua code into user session files.

    The consequence of this vulnerability is significant, as it allows attackers to execute arbitrary system commands with the privileges of the FTP service, which could lead to complete server compromise.

    Who is affected

    Organizations using Wing FTP Server versions prior to 7.4.4 are at risk. This includes both user and admin web interfaces that mishandle null byte characters.

    The vulnerability is particularly concerning as it can be exploited through anonymous FTP accounts, increasing the attack surface.

    • Wing FTP Server users and administrators
    • Organizations relying on FTP services for file transfers
    • Any entity using versions before 7.4.4

    What to do

    Immediate action is required to mitigate the risk associated with this vulnerability. Users should upgrade to Wing FTP Server version 7.4.4 or later to close this security gap.

    Additionally, review FTP access controls and monitor for any unusual activity that may indicate exploitation attempts.

    • Upgrade to Wing FTP Server version 7.4.4 or later
    • Implement strict access controls for FTP accounts
    • Monitor server logs for suspicious activity

    Original report