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Cybersecurity

Cybersecurity knowledge cards on KnowBite — curated from specialist publications, updated throughout the day.

  2. Tech Firms Dismantle Botnet That Turned 1.3M TV Boxes Into Proxies

    Google said today it worked with industry partners to dismantle a botnet made up of more than 1.3 million Android TV set-top boxes that ship with malicious software which secretly rents the user's Internet connection out to strangers and conducts advertising fraud. Experts involved in the takedown say the action is likely to sever the botnet's access to more than 10 million additional compromised systems, including…

    Krebs on Security · 2026-11-03T02:24:31Z

  3. How we halved DNS build delay and cut memory use by 85%

    Zone setting changes used to rebuild entire DNS zones, even ones with tens of millions of records. Here is how we built a planner that picks the smallest safe build, cutting full builds by 40%, peak memory by 85%, and halving build delay.

    The Cloudflare Blog · 2026-11-02T14:00:00Z

  4. Widespread PHP Flaw May Cause Many Site Outages Today

    Expect to see quite a few websites serving "404" or "Page Not Found" errors today: Nearly 70 percent of websites need to update their core software to fix a pair of vulnerabilities that allow an attacker to seize full control over affected servers. Experts say there are working exploits for the flaws, and that these critical bugs are already being exploited in the wild.

    Krebs on Security · 2026-10-21T15:26:07Z

  5. 4 real? Tracking exploitation and patching of eMudhra’s weak keys

    Four, just four: that’s the key to break into any unpatched connection on the Internet that is using eMudhra certificates. Here’s how we quickly patched Cloudflare, what evidence we can see of attempted exploitation, and how much of the rest of the Internet remains exposed.

    The Cloudflare Blog · 2026-10-30T17:38:50Z

  6. Feds Suspect Ransom Negotiator Ran ShinyHunters Extortion Site

    U.S. federal investigators pursuing the ShinyHunters hacking group that recently stole highly sensitive data from the FBI have identified executives at two different ransomware negotiation firms who maintained unusually close relations with the extortion group, KrebsOnSecurity has learned. Sources close to the investigation say one of the executives in the United States even helped ShinyHunters operate a website…

    Krebs on Security · 2026-10-19T13:48:56Z

  8. U.K. Sanctions Cryptomus for RU Money Laundering

    The United Kingdom has issued economic sanctions against Cryptomus, a chameleonic cryptocurrency platform that experts say serves as a major conduit for payments related to ransomware, narcotics, darknet markets, fraud and cybercrime services that are helping Russia circumvent existing financial restrictions.

    Krebs on Security · 2026-10-14T14:22:49Z

  9. Cloudflare DDoS Threat Report 2026 Q3: More swarms, fewer giants

    Cloudflare mitigated over 8,200 DDoS attacks per hour in Q3 2026 as attackers shifted to shorter, high-frequency strikes. Explore the latest threat data, including the collapse of CLDAP vectors and the impact of recent botnet takedowns.

    The Cloudflare Blog · 2026-10-29T12:55:00Z

  10. Microsoft Patches More Than 1,400 Security Flaws

    Microsoft today issued updates to fix more than 1,400 security vulnerabilities in its Windows operating systems and other software. Today's epic patch batch dwarfs September's record of nearly 1,000 fixes, which was already about ten times the normal monthly patch load from Redmond.

    Krebs on Security · 2026-10-13T23:24:53Z

  11. Introducing the Cloudflare PHP Capture the Flag challenge

    We are launching a PHP Capture the Flag challenge integrated with our Bug Bounty program to test our WAF protections. Security researchers are invited to bypass our defenses and capture the flag to help make the Internet safer.

    The Cloudflare Blog · 2026-10-27T13:00:00Z

  12. FBI Arrests Executive at Ransomware Negotiation Firm

    Agents with the Federal Bureau of Investigation (FBI) on Thursday arrested the co-founder of a Canadian cybersecurity firm in connection with an investigation into the ShinyHunters hacking group that recently relieved the FBI of sensitive data on thousands of agents, multiple sources tell KrebsOnSecurity.

    Krebs on Security · 2026-10-10T00:17:42Z

  13. What took the Internet offline in Q3 2026

    An examination of global Internet disruptions observed by Cloudflare Radar during the third quarter of 2026. This review analyzes how power failures, natural disasters, and government shutdowns impacted network connectivity and traffic.

    The Cloudflare Blog · 2026-10-27T13:00:00Z

  14. ShinyHunters Extorted Boeing Spin-off Prior to Arrests

    A teenager from Amman, Jordan suspected of leading the prolific data theft and extortion group ShinyHunters has been detained and is reportedly cooperating with the FBI to identify other members of the hacking gang. KrebsOnSecurity has learned that the suspect, who uses the hacker handle "Rey," was detained as ShinyHunters was in the process of extorting a business unit recently divested by the global aerospace…

    Krebs on Security · 2026-10-07T13:48:45Z

  16. Dutch Police Arrest ‘Reformed’ Hacker in Shiny Hunters Investigation

    Authorities in the Netherlands have arrested a 23-year-old convicted cybercriminal on suspicion of aiding in data thefts and extortions by the prolific hacker group ShinyHunters. In the days immediately following the suspect's arrest, remaining ShinyHunters members dramatically escalated their attacks, stealing highly sensitive data from the FBI and extorting the Russian ransomware group Cl0p.

    Krebs on Security · 2026-09-28T15:08:57Z

  18. U.S. Soldier Gets 70 Months in Prison for AT&T, Verizon Extortions

    A U.S. Army soldier who pleaded guilty to hacking into multiple telecommunications companies and stealing mobile call and text metadata for more than 100 million AT&T customers in 2024 was sentenced to 70 months in federal prison today and ordered to pay nearly $300,000 in restitution to victims.

    Krebs on Security · 2026-09-25T21:44:40Z

  20. Data Broker Radaris Loses Domains in Privacy Fight

    The consumer data broker Radaris.com has long had a reputation for ignoring requests to remove personal information from its vast empire of people-search services online. That reputation caught up with the company recently in a lawsuit alleging Radaris violated a New Jersey privacy law that provides for hefty fines against data brokers that publish personal information on state law enforcement officials. In the face…

    Krebs on Security · 2026-09-16T18:14:22Z

  22. Microsoft Plugs Nearly 1,000 Security Holes

    Microsoft Corp. today issued updates to plug at least 974 security holes in its Windows operating systems and other software, by far its biggest single patch batch ever. Microsoft says artificial intelligence is helping to speed the discovery of vulnerabilities, but security experts warn that many organizations already are struggling to prioritize the more human-intensive endeavor of testing and deploying so many…

    Krebs on Security · 2026-09-08T21:44:22Z

  23. Introducing full transaction detection for Cloudflare WAF

    Cloudflare's web application firewall can now correlate an HTTP request with its response. Full transaction detection helps every customer find successful exploits, data exposure, and risky misconfigurations that request-only inspection can miss.

    The Cloudflare Blog · 2026-10-21T14:10:42Z

  24. FBI Probes Service Selling 153M+ Drivers Licenses

    A new identity theft service launched on the dark web this week is selling digital scans of more than 153 million drivers licenses from people in the United States and Canada. Based on interviews with individuals whose licenses are available for purchase on this service, it appears to be siphoning images collected by a widely-used identity verification company based in Louisiana. KrebsOnSecurity also has learned…

    Krebs on Security · 2026-09-01T22:40:28Z

  25. Cloudflare deploys protections against php2shell vulnerability

    Cloudflare has deployed default web application firewall (WAF) protections for newly disclosed PHP vulnerabilities before public disclosure. The rules use request and response signals to stop exploit attempts and prevent exposed data from reaching attackers.

    The Cloudflare Blog · 2026-10-21T13:56:45Z

  26. Two Alleged ‘TeamPCP’ Hackers Arrested in Australia

    Authorities in Australia have arrested two men believed to be members of TeamPCP, a prolific cybercrime and data extortion group blamed for perpetrating the longest running spree of software supply chain attacks ever. In a statement released today, the Australian Federal Police (AFP) said two unnamed suspects from Western Australia, aged 21 and 23, were arrested in connection with a "sophisticated cybercrime…

    Krebs on Security · 2026-08-27T11:04:15Z

  28. Who’s Tracking You? Use This New Service to Find Out

    It can be daunting to determine who's responsible for showing ads on the websites we visit, or who's harvesting data from the mobile apps we use every day. That information is already semi-public, but it is not easily parsed and traditionally much of it has remained walled away in the hands of large advertising platforms. Not anymore: A powerful and free new service called DecryptAds scrapes and correlates this…

    Krebs on Security · 2026-08-14T11:24:35Z

  29. 8 eMudhra certificates are compromised. Here's what you need to know

    Following the discovery that eight eMudhra intermediate certificates use weak keys, Cloudflare is deploying mitigations and releasing client updates. We explain the impact, our response, and what customers and developers should do next.

    The Cloudflare Blog · 2026-10-20T22:20:16Z

  30. Microsoft Plugs Nearly 400 Security Holes

    Microsoft today released updates to remedy at least 398 security vulnerabilities in its Windows operating systems and supported software, including one weakness that is already being actively exploited and two others that were publicly detailed prior to today.

    Krebs on Security · 2026-08-11T21:28:35Z

  32. Canadian Man Pleads Guilty in Snowflake Extortions

    A 26-year-old Canadian man once described as one of the most consequential cybercrime threat actors of 2024 has pleaded guilty to computer fraud and conspiracy to hack and extort more than 165 organizations that used the cloud data storage provider Snowflake. Connor Riley Moucka, of Kitchener, Ontario, also admitted to stealing call and text history records of more than 100 million AT&T customers.

    Krebs on Security · 2026-08-06T17:00:56Z

  34. Read This Before You Buy That TV Streaming Stick

    Security experts have been sounding the alarm for years about the risks of using generic TV boxes that promise unlimited content streaming for a one-time fee, warning that they secretly rent the user's Internet connection out to strangers. But a groundbreaking new analysis finds these devices also routinely spoof themselves as mobile phones clicking ads on AI-generated websites as part of sprawling operation that…

    Krebs on Security · 2026-07-30T16:49:00Z

  36. LG to Ban Residential Proxies from Smart TV Apps

    The home appliance giant LG Electronics USA said this week it plans to suspend any apps built for its smart TVs that turn one's television into an always-on residential proxy node. The move comes less than a month after researchers found that more than 42 percent of games and other apps available for download on LG's webOS store allow unknown third-parties to route their Internet traffic through a user's TV.

    Krebs on Security · 2026-07-22T01:10:38Z

  38. Continuous accountability for Verified bots

    Identity alone doesn't guarantee a bot will behave responsibly. We are introducing a system to continuously evaluate whether Verified bots honor site preferences, like robots.txt and HTTP 429s, ensuring they remain accountable over time.

    The Cloudflare Blog · 2026-10-16T13:00:00Z

  39. A fully programmable secure web gateway

    Cloudflare Gateway and Data Loss Prevention have inherited the flexibility and power of Cloudflare Workers through our full-stack integration with the Cloudflare Developer platform.

    The Cloudflare Blog · 2026-10-15T17:11:12Z

  40. Deploy with Void

    Introducing Void: an open-source SDK, CLI, and self-hosted platform for building full-stack Vite apps and deploying them to Cloudflare.

    The Cloudflare Blog · 2026-10-15T14:00:00Z