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Threat actor activity and indicators
Iran's Cyber Threat Landscape Intensifies
Iran's cyber threat landscape is escalating, with phishing, hacktivist operations, and criminal activity converging to create a complex risk picture. A recent Unit 42 threat brief offers valuable insights and practical guidance to help defenders stay ahead of these emerging threats.
US Seizes Control of North Korea's Fake Remote Worker Scam Network
Imagine a network of seemingly ordinary remote workers secretly infiltrating over 100 companies - only to discover they were all part of a massive scam run by North Korea. Two Americans have been jailed for helping the rogue nation pull off this daring cyber deception.
Zero-Day Exploits Multiply as Hacker Creativity Surges
Feeling overwhelmed by the endless stream of cybersecurity threats? Every Thursday morning, you're faced with a daunting question: how to stay informed without getting bogged down by a never-ending parade of old and new threats.
Iranian Operative Behind L.A. Metro Cyberattack
New intelligence suggests a pro-Iranian operative is behind the L.A. Metro cyberattack, shifting the focus from the disruption caused to the motivations and strategic intentions of the attacker. This development elevates the incident from a local service outage to a complex geopolitical issue.
US and UK Cyber Leaders Scramble to Contain Claude Mythos Threat
As a new AI tool, Claude Mythos, raises red flags with its potential to aid hacking, US and UK cyber leaders are scrambling to contain the threat and reassess their cybersecurity strategies. This emerging concern marks a new front in AI and cybersecurity, where commercially available models are now viewed as a potential operational risk.
Iranian Campaign Targets 3,900 Devices in US Infrastructure
A recent Iranian cyber campaign has set its sights on a staggering 3,900 exposed devices in US infrastructure, putting energy, water, and government services at risk. This large-scale threat is a clear warning sign that these critical systems may be vulnerable to attack.
FBI Disrupts APT28's Router-Based Espionage Operations
The FBI recently disrupted a sneaky espionage operation run by APT28, a Russian GRU-linked group notorious for its broad reach, by cutting off their access to a network of routers they used as a launching pad for further attacks. This bold move effectively severed the group's tremendous access, putting a stop to their clever tactics.
India-Tied Hack-for-Hire Group Targets MENA Journalists
Meet the shadowy hack-for-hire group with ties to India that's targeting journalists and activists in the Middle East and North Africa, silencing voices and stifling free speech. Their sinister operations have been uncovered by security researchers, revealing a chilling espionage trade where reporters, officials, and dissenting voices are prime targets.
Bitter APT Group Exploits Middle East Spear-Phishing Campaign
The Bitter APT Group has been linked to a sophisticated year-long spear-phishing campaign that targeted the Middle East, using deceptive emails to spread its reach. This hack-for-hire effort, attributed to a South Asian connection, signals a sustained threat to the region's security.
UNC6783 Hackers Infiltrate BPOs to Steal Corporate Support Tickets
Hackers known as UNC6783 are exploiting business process outsourcing providers to gain access to sensitive corporate support tickets on platforms like Zendesk, putting high-value companies across multiple sectors at risk. This sneaky tactic opens the door for cybercriminals to infiltrate and wreak havoc on unsuspecting organizations.
CISA Warns of Iranian Cyber Actors Targeting US Infrastructure
The Cybersecurity and Infrastructure Security Agency (CISA) has sounded the alarm: Iranian-linked cyber actors are targeting US critical infrastructure, posing a threat to public safety, services, and commerce. American organizations must take immediate action to assess their risk and bolster defenses.
FBI Disrupts Russian Hacker Network with DNS Hijacking Takedown
In a major cyber takedown, the FBI has successfully disrupted a Russian hacker network by pulling the plug on compromised US-based routers, effectively cutting off the threat actor's malicious infrastructure. This bold move allowed authorities to neutralize the threat without relying on individual device owners to take action.
Iranian Hackers Infiltrate US Critical Infrastructure via OT Weaknesses
US critical infrastructure providers are reeling from a wake-up call after Iranian-backed hackers exploited weaknesses in internet-exposed operational technology assets, causing disruption and financial loss. The alarming breach, revealed by the Cybersecurity and Infrastructure Security Agency, highlights the high stakes of vulnerable systems.
Mandiant Report Reveals Evolving Cyber Threat Tactics
Discover the alarming evolution of cyber threats in Mandiant's M-Trends 2026 report, which reveals a stark reality: attackers are now operating under two distinct playbooks, drastically changing the detection, response, and risk landscape. The report uncovers a significant increase in global median dwell time to 14 days, with some attacks lingering for as long as 122 days.
Kaspersky Report Exposes Shifting Cyberattack Landscape
Get ready to face the future of cyber threats! The Kaspersky Security Services report delivers eye-opening insights into the evolving cyberattack landscape, combining real-world incident response findings with hard data from its Managed Detection and Response service.
Censys Bolsters AI-Driven Threat Intel with $70M Funding
Censys just secured $70 million in funding to supercharge its AI-driven threat intelligence platform, giving defenders real-time visibility into the global network's underlying infrastructure. This game-changing tech helps defenders stay one step ahead of attackers by mapping and monitoring the internet's technical surface.
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Microsoft Grapples with Weeks-Long Exchange Online Mailbox Access Disruptions
Weeks of frustrating disruptions have left Outlook mobile and macOS users struggling to access their Exchange Online mailboxes, sparking a flurry of questions about reliability and resolution. Microsoft is actively investigating the issue, but for affected users, the wait for a fix continues.
US Charges Filed in High-Profile Crypto Hacks and Fentanyl Cases
This week's string of high-profile crypto hacks, indictments, and regulatory moves exposes a growing dilemma: as decentralized finance and crypto markets expand, the lines between crime, commerce, and policy are becoming increasingly blurred. From charged crypto hacks to fentanyl cases, the seams where these worlds meet are fraying in plain sight.
Microsoft Probes Outlook Disruption Tied to Email Delivery Issues
Microsoft is investigating a frustrating issue affecting Classic Outlook users, preventing them from sending emails via Outlook.com due to a bug linked to broader email delivery problems. The disruption is causing inconvenience for users relying on seamless communication.
Critical Maritime Threat: Alarming Rise in Underwater Attack Drones Spurs Urgent Tech Hunt
The US and UK are racing against time to outsmart a growing maritime threat: underwater attack drones that can devastate ships, harbors, and critical infrastructure. With a joint call for tech tenders and a tight deadline of April 3, they're on a mission to find cutting-edge solutions before it's too late.
North Korea’s APT37 Exclusive: Dangerous Tool Hits Air-Gap
Think the most isolated machines are untouchable? North Korea’s APT37 has broadened its toolkit — combining believable lures with new utilities that can defeat air‑gap protections and put highly sensitive systems at fresh risk.
I Am in the Epstein Files Exclusive: Disturbing Revelations
A throwaway 2016 email from Vincenzo lozzo casually dismissing Bruce Schneier cracks open the Epstein files; what looks like a ledger of crimes is also a map of how the wealthy and tech‑savvy shaped conversations about privacy, security and reputation.
ThreatsDay Bulletin Exclusive: Essential Cyber Threats
Ever wondered what happens when trusted doors are left unlocked? This ThreatsDay Bulletin shows how trusted attack chains—everyday files, SMS, cloud APIs and smart contracts—are being repurposed into stealthy, high‑leverage strikes and what you can do to shut them down.
AI Exclusive: Corporate Capture Threatens Knowledge
A decade after Aaron Swartz, AI’s hunger for research risks putting a few corporations in charge of access to knowledge — deciding what we can learn, who benefits, and which ideas get heard.