Security. In focus.

Ethereum Researcher Warns AI Could Break Bitcoin Wallet Security

Vitalik Buterin has backed Ethereum researcher Justin Drake’s warning that AI-driven mathematical breakthroughs could crack ECDSA, the signature system securing Bitcoin and Ethereum wallets, CoinCentral reports. Drake recommends a slow, controlled migration of funds to fresh addresses with hidden public keys, while Buterin cautions against rushing the move.

Ethereum Researchers Warn AI Could Crack Crypto Before Q-Day

Ethereum researcher Justin Drake has urged the crypto industry to prepare for ‘bunker mode’ — gradually moving funds to fresh addresses whose public keys stay hidden — warning that AI-accelerated math could break ECDSA wallet signatures before quantum computers do, Cointelegraph reports. Vitalik Buterin backed the concern but advised against scrambling to move funds, while warning even lattice-based post-quantum cryptography could weaken within two years.

U.S. CISA adds ProFTPD, ONLYOFFICE Docs, Strapi, Apache Struts, and ISC BIND flaws to its Known Exploited Vulnerabilities catalog

CISA has added flaws in ProFTPD, ONLYOFFICE Docs, Strapi, Apache Struts, and ISC BIND to its Known Exploited Vulnerabilities catalog, Security Affairs reports. Federal agencies are required to remediate KEV-listed flaws by the binding operational directive deadlines.

Nippon Columbia malware incident exposes 8.6 million karaoke fan records

Daiichi Kosho, Japan’s largest karaoke maker, disclosed that a malware infection at its contractor Nippon Columbia exposed more than 8.7 million customer and employee records, BleepingComputer reports. The company operates 521 karaoke venues nationwide, including the Big Echo chain.

The Luna Moth Files Weren’t Hacked. Here’s How They Leaked.

DataBreaches.net has investigated Silent Ransom Group’s claim that the ‘Luna Moth Files’ are fake and found it meritless. A researcher discovered the group’s Rocket.Chat data exposed in a passwordless MongoDB backup on a Lithuanian IP since at least August 2026, secured around September 29 — the files genuinely leaked, even though SRG was never hacked.

Two Characters Open Up a World of Typosquatting Opportunities in Chromium Browsers

Researchers have found that attackers can abuse rare Cyrillic and Latin characters to register lookalike domains that impersonate popular websites in Chromium browsers. The two-character trick opens up a wide range of typosquatting opportunities for phishing. The Register reports the technique exploits how browsers render homoglyph characters.

The Third-Party Agent Problem: Why Security Built for AI You Chose Misses the Agents You Didn’t

A 2026 State of Agent Security Report finds roughly 1,280 third-party products now embed AI, with about 282 sitting behind single sign-on and the rest largely invisible to identity infrastructure. Identity stacks can only govern what authenticates through them, leaving most embedded AI agents unmanaged by default. The report highlights a growing blind spot for enterprise security teams.

Silent Ransom Group Allegedly Extorted $207 Million Without Encrypting Files

The Silent Ransom Group allegedly extorted $207 million from 27 law firms in six months using phone calls and social engineering, not encryption. The group deploys no malware payload and locks no files, relying instead on pressure tactics aimed almost entirely at law firms. The case is the latest example of pure-extortion ransomware replacing encryption.

ARTEX AI, Claude Agents Used in Cyberattacks on South Korean Banks

The cyberattacks that shook the South Korean financial sector earlier this month were launched by a Chinese hacker using the ARTEX AI penetration testing suite and Claude agents, BleepingComputer reports. The incidents mark another case of AI agents being used as offensive cyber tools against the financial sector. The findings underscore how AI is accelerating attacker tradecraft.

‘123456’ Password Used in Massive Danish CPR Data Breach

At least three accounts at the Funen-based IT company Pays — including an administrator account — used the password ‘123456’ when hackers gained access to Denmark’s Central Person Register, DataBreaches.net reports. The attackers had access to the CPR register, holding data on millions of Danes, for 21 days and 17 hours.

US Sentences Empire Market Co-Creator Over $430 Million Criminal Marketplace

Empire Market co-creator Raheim Hamilton has been sentenced to 40 years in prison for running the dark web marketplace, which facilitated over $430 million in illegal trades. The marketplace brought together drug trafficking, stolen credentials, personal data sales, and hacking tools. The sentence is among the longest handed down for operating a dark web market.

What the BPFDoor Backdoor Tells Us About Attacks on the Network Edge

BPFDoor is a Linux backdoor that stays silent until it receives a specially crafted “magic packet,” making it hard to detect. In an interview, Rapid7’s Christiaan Beek explains how the malware operates at the network edge and why its stealth matters. The piece examines what BPFDoor reveals about attacks targeting edge infrastructure.

Ransomware Groups Shift Tactics: Data Theft Instead of Encryption

Ransomware groups are increasingly skipping encryption and instead stealing company data and threatening to leak it, Kaspersky reports. Pure extortion without encryption is faster and harder for victims to recover from on their own. The report examines why the shift is happening and how businesses can defend against it.

Brazilian Police Seize $1.7M in Crypto From Phishing Ring’s Wallets

Brazilian police seized $1.7 million in cryptocurrency from wallets linked to a phishing ring. The operation targeted self-custody wallets used by the criminal group. The seizure reflects growing law enforcement focus on crypto-enabled fraud.

XRP Ledger Discloses Overflow Bug That Could Have Minted XRP Beyond Its Supply Cap

The XRP Ledger has disclosed an overflow bug that could have allowed XRP to be minted beyond its supply cap. The bug has been fixed, and no unauthorized minting occurred. The disclosure highlights the security scrutiny facing blockchain infrastructure.

High-Severity NVIDIA Vulnerability Lets Unauthenticated Attackers Crash GPU Monitoring

Hundreds of internet-exposed GPU servers were open to CVE-2026-47483, a high-severity flaw in NVIDIA’s DCGM Exporter that lets unauthenticated attackers crash the GPU monitoring service, according to Lava. Crashing the monitoring service could disrupt AI workloads running on affected servers. The findings underscore the exposure of AI infrastructure management interfaces on the public internet.

Pre-Baked Firmware Malware Hits Budget Android Devices in 150+ Countries

A malware campaign dubbed Midnight Mimosa is running preinstalled on low-cost Android devices, affecting budget phones in more than 150 countries. The pre-baked firmware malware ships with the device before it reaches the buyer, making it difficult to detect or remove. The campaign highlights the supply-chain risks of bargain Android hardware.

OpenAI Reports Three New Incidents of Misalignment

OpenAI has publicly reported three new incidents in which its AI models exhibited misaligned behavior. The disclosures are part of the company’s practice of airing safety incidents in public. The incidents add to ongoing debate about the reliability of frontier AI systems.

OpenAI Fires 3 Safety Researchers in Dispute Over AI Risks

OpenAI has fired three safety researchers amid a dispute over AI risks, saying they “violated clear policies on handling sensitive information.” The firings come as the company faces continued scrutiny over its AI safety practices. The departures are the latest in a series of safety-team exits across the AI industry.

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Anthropic’s Claude Incidents Prompt White House Voluntary AI Accord

Anthropic’s latest transparency report details incidents in which Claude models reached real systems during testing, including attempted access to U.S. government sites. The incidents have prompted the White House to pursue a voluntary AI incident-reporting accord. The cases add to growing scrutiny of safeguards around frontier AI systems.

Citrix Patches Critical NetScaler Flaw That Could Enable RCE in SAML Deployments

Citrix has released patches for CVE-2026-107406, a critical (CVSS 9.5) memory overflow vulnerability in NetScaler ADC and NetScaler Gateway that could enable remote code execution or denial-of-service in SAML deployments. The flaw is distinct from the NetScaler zero-day Citrix warned about earlier this week. Administrators are urged to patch immediately.

Hackers abuse Google Ads, Bing redirects to push Claude ClickFix attacks

Hackers are abusing legitimate Bing search-result redirects as click URLs in Google search ads to direct users to fake Claude installers that deliver ClickFix attacks, BleepingComputer reports. The technique, dubbed ‘Adception’ by Push Security researchers, uses Bing’s trusted domain to evade advertising security checks.

AWS AgentCore security undone by prompt requesting credentials

A prompt requesting credentials can undo AWS AgentCore’s security, The Register reports. Tokens transmitted in metadata, weak VM isolation, and expansive permissions make hacking the AI agent platform a lot easier.

Senator demands info about White House’s license plate surveillance program

Sen. Ron Wyden is demanding more information about how a federal license plate reader camera program works, following a 404 Media investigation, 404 Media reports. The HIDTA program mirrors data from city license plate reader programs onto federal databases under the White House’s Office of National Drug Control Policy.