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At least half of dozen GitHub accounts from fake researchers associated with a fraudulent cybersecurity company have been observed pushing malicious repositories on the code hosting service. All seven repositories, which are still available as of writing, claim to be a proof-of-concept (PoC) exploit for purported zero-day flaws in Discord, Google Chrome, and Microsoft Exchange Server. VulnCheck, which discovered the activity,  said , "the individuals creating these repositories have put significant effort into making them look legitimate by creating a network of accounts and Twitter profiles, pretending to be part of a non-existent company called High Sierra Cyber Security." The cybersecurity firm said it first came across the rogue repositories in early May when they were observed releasing similar PoC exploits for zero-day bugs in Signal and WhatsApp. The repositories hosting the two PoCs have since been taken down. Besides sharing some of the purported findings on Tw...

Apple on Monday rolled out security updates for  iOS ,  macOS ,  tvOS ,  watchOS , and  Safari  web browser to fix multiple vulnerabilities, including an actively exploited zero-day flaw in macOS Big Sur and expand patches for two previously disclosed zero-day flaws.  Tracked as CVE-2021-30713, the zero-day concerns a permissions issue in Apple's Transparency, Consent, and Control ( TCC ) framework in macOS that maintains a database of each user's consents. The iPhone maker acknowledged that the issue may have been exploited in the wild but stopped short of sharing specifics. The company noted that it rectified the problem with improved validation. However, in a separate report, mobile device management company Jamf said the bypass flaw was being actively exploited by XCSSET, a malware that's been out in the wild since August 2020 and known to propagate via modified  Xcode IDE projects  hosted on GitHub repositories and plant malicious p...

The operators of  Raspberry Robin  are now using two new one-day exploits to achieve local privilege escalation, even as the malware continues to be refined and improved to make it stealthier than before. This means that "Raspberry Robin has access to an exploit seller or its authors develop the exploits themselves in a short period of time," Check Point  said  in a report this week. Raspberry Robin (aka QNAP worm), first documented in 2021, is an  evasive malware family  that's known to act as one of the  top initial access facilitators  for other malicious payloads, including ransomware. Attributed to a threat actor named Storm-0856 (previously DEV-0856), it's propagated via several entry vectors, including infected USB drives, with Microsoft  describing  it as part of a "complex and interconnected malware ecosystem" with ties to other e-crime groups like  Evil Corp, Silence, and TA505 . Raspberry Robin's use of one-day expl...

Google on Monday disclosed details about an ongoing campaign carried out by a government-backed threat actor from North Korea that has targeted security researchers working on vulnerability research and development. The internet giant's Threat Analysis Group (TAG) said the adversary created a research blog and multiple profiles on various social media platforms such as Twitter, LinkedIn, Telegram, Discord, and Keybase in a bid to communicate with the researchers and build trust. The goal, it appears, is to steal exploits developed by the researchers for possibly undisclosed vulnerabilities, thereby allowing them to stage further attacks on vulnerable targets of their choice. "Their blog contains write-ups and analysis of vulnerabilities that have been publicly disclosed, including 'guest' posts from unwitting legitimate security researchers, likely in an attempt to build additional credibility with other security researchers,"  said  TAG researcher Adam Weide...

This week, a 23-year-old Serbian activist found themselves at the crossroads of digital danger when a sneaky zero-day exploit turned their Android device into a target. Meanwhile, Microsoft pulled back the curtain on a scheme where cybercriminals used AI tools for harmful pranks, and a massive trove of live secrets was discovered, reminding us that even the tools we rely on can hide risky surprises. We’ve sifted through a storm of cyber threats—from phishing scams to malware attacks—and broken down what it means for you in clear, everyday language. Get ready to dive into the details, understand the risks, and learn how to protect yourself in an increasingly unpredictable online world. ⚡ Threat of the Week Serbian Youth Activist Targeted by Android 0-Day Exploit Chain — A 23-year-old Serbian youth activist had their Android phone targeted by a zero-day exploit chain developed by Cellebrite to unlock the device and likely deploy an Android spyware called NoviSpy. The flaws combined ...

Today, every unpatched system, leaked password, and overlooked plugin is a doorway for attackers. Supply chains stretch deep into the code we trust, and malware hides not just in shady apps — but in job offers, hardware, and cloud services we rely on every day. Hackers don’t need sophisticated exploits anymore. Sometimes, your credentials and a little social engineering are enough. This week, we trace how simple oversights turn into major breaches — and the silent threats most companies still underestimate. Let’s dive in. ⚡ Threat of the Week UNC5221 Exploits New Ivanti Flaw to Drop Malware — The China-nexus cyber espionage group tracked as UNC5221 exploited a now-patched flaw in Ivanti Connect Secure, CVE-2025-22457 (CVSS score: 9.0), to deliver an in-memory dropper called TRAILBLAZE, a passive backdoor codenamed BRUSHFIRE, and the SPAWN malware suite. The vulnerability was originally patched by Ivanti on February 11, 2025, indicating that the threat actors studied the patch a...

This week starts small. A token leaks. A bad package slips in. A login trick works. An old tool shows up again. At first, it feels like the usual mess. Then you see the pattern: attackers are not always breaking in. They are using the parts we already trust. That is what makes it worrying. The danger is in normal things now - updates, apps, cloud buttons, support chats, trusted accounts. AI does not make the attacks magic. It just helps people try more things, faster. Here's what showed up this week. 47 zero-days exposed 47 0-Days Discovered in Pwn2Own Berlin 2026 The Pwn2Own Berlin 2026 hacking contest has concluded, with security researchers collecting $1,298,250 in rewards after exploiting 47 zero-day flaws in various products from Windows, Linux, VMware, and NVIDIA. DEVCORE won the event with 50.5 Master of Pwn points and $505,000 in rewards throughout the three-day contest after hacking Microsoft SharePoint, Microsoft E...

A North Korean government-backed campaign targeting cybersecurity researchers with malware has re-emerged with new tactics in their arsenal as part of a fresh social engineering attack. In an update shared on Wednesday, Google's Threat Analysis Group said the attackers behind the operation set up a fake security company called SecuriElite and a slew of social media accounts across Twitter and LinkedIn in an attempt to trick unsuspecting researchers into visiting the company's booby-trapped website "where a browser exploit was waiting to be triggered." "The new website claims the company is an offensive security company located in Turkey that offers pentests, software security assessments and exploits," TAG's Adam Weidemann  said . The website is said to have gone live on March 17. A total of eight Twitter profiles and seven LinkedIn profiles, who claimed to be vulnerability researchers and human resources personnel at different security firms (inclu...

Even in well-secured environments, attackers are getting in—not with flashy exploits, but by quietly taking advantage of weak settings, outdated encryption, and trusted tools left unprotected. These attacks don’t depend on zero-days. They work by staying unnoticed—slipping through the cracks in what we monitor and what we assume is safe. What once looked suspicious now blends in, thanks to modular techniques and automation that copy normal behavior. The real concern? Control isn’t just being challenged—it’s being quietly taken. This week’s updates highlight how default settings, blurred trust boundaries, and exposed infrastructure are turning everyday systems into entry points. ⚡ Threat of the Week Critical SharePoint Zero-Day Actively Exploited (Patch Released Today) — Microsoft has released fixes to address two security flaws in SharePoint Server that have come under active exploitation in the wild to breach dozens of organizations across the world. Details of exploitation emer...

This week was a reminder that attackers do not always need big tricks. One small mistake, one old access path, one missed patch, and suddenly the door is open. The noise is not all noise, either. Forums are talking, researchers are finding easy cracks, and defenders have more cleanup waiting. Here’s the full Monday recap. ⚡ Threat of the Week New DirtyClone Linux Kernel Flaw Lets Local Users Gain Root via Cloned Packets — Cybersecurity researchers detailed a new variant of the Dirty Frag Linux kernel flaw. Called DirtyClone (aka CVE-2026-43503), it allows local users to gain root privileges via cloned packets. The exploit works successfully on Debian, Ubuntu, and Fedora systems with default namespace configurations. "Any local user on a server or device running a vulnerable kernel who holds or can acquire the CAP_NET_ADMIN capability (frequently obtainable via unprivileged user namespaces) [is exploitable]," JFrog said. "This poses the highest risk to multi-te...

The comfort zone in cybersecurity is gone. Attackers are scaling down, focusing tighter, and squeezing more value from fewer, high-impact targets. At the same time, defenders face growing blind spots — from spoofed messages to large-scale social engineering. This week’s findings show how that shrinking margin of safety is redrawing the threat landscape. Here’s what’s making headlines. Hijack Loader expands its reach in Latin America LATAM Targeted by PureHVNC Phishing emails containing SVG file attachments targeting Colombian, Spanish-speaking individuals with themes relating to the Attorney General's office of Colombia have been used to deliver PureHVNC RAT . "The emails entice the user to download an 'official document' from the judicial information system, which starts the infection chain of executing a Hijack Loader executable that leads to the PureHVNC Remote Access Trojan (RAT)," IBM X-Force said . The activity w...

Monday is back, and the weekend’s backlog of chaos is officially hitting the fan. We are tracking a critical zero-day that has been quietly living in your PDFs for months, plus some aggressive state-sponsored meddling in infrastructure that is finally coming to light. It is one of those mornings where the gap between a quiet shift and a full-blown incident response is basically non-existent. The variety this week is particularly nasty. We have AI models being turned into autonomous exploit engines, North Korean groups playing the long game with social engineering, and fileless malware hitting enterprise workflows. There is also a major botnet takedown and new research proving that even fiber optic cables can be used to eavesdrop on your private conversations. Skim this before your next meeting. Let’s get into it. ⚡ Threat of the Week Adobe Acrobat Reader 0-Day Under Attack   — Adobe released emergency updates to fix a critical...

Attackers took over more than 400 packages in the Arch User Repository (AUR) this week and rewrote their build scripts to install a credential stealer on any machine that built them. The malware is a Rust binary built to harvest developer secrets. When it lands with root, it can also load an eBPF rootkit to hide itself. The AUR is Arch Linux's community package collection, and it is separate from the official Arch repositories, which were not affected. If you installed or updated an AUR package on or after June 11, check it against the current affected-package lists before trusting the host. The list of names is large, still growing, and not yet complete. This attack goes after the trust model, not a software flaw. The compromised packages kept their names, their histories, and the trust that came with them. Only the build instructions changed. The trap sat in the recipe, leaving the package itself looking exactly like the software users meant to install. No exploit, no ze...

Every week brings new discoveries, attacks, and defenses that shape the state of cybersecurity. Some threats are stopped quickly, while others go unseen until they cause real damage. Sometimes a single update, exploit, or mistake changes how we think about risk and protection. Every incident shows how defenders adapt — and how fast attackers try to stay ahead. This week’s recap brings you the key moments that matter most, in one place, so you can stay informed and ready for what’s next. ⚡ Threat of the Week Google Disrupts IPIDEA Residential Proxy Network — Google has crippled IPIDEA, a massive residential proxy network consisting of user devices that are being used as the last-mile link in cyberattack chains. According to the tech giant, not only do these networks permit bad actors to conceal their malicious traffic, but they also open up users who enroll their devices to further attacks. Residential IP addresses in the U.S., Canada, and Europe were seen as the most desirable. ...

The cyber world never hits pause, and staying alert matters more than ever. Every week brings new tricks, smarter attacks, and fresh lessons from the field. This recap cuts through the noise to share what really matters—key trends, warning signs, and stories shaping today’s security landscape. Whether you’re defending systems or just keeping up, these highlights help you spot what’s coming before it lands on your screen. ⚡ Threat of the Week Oracle 0-Day Under Attack — Threat actors with ties to the Cl0p ransomware group have exploited a zero-day flaw in E-Business Suite to facilitate data theft attacks. The vulnerability, tracked as CVE-2025-61882 (CVSS score: 9.8), concerns an unspecified bug that could allow an unauthenticated attacker with network access via HTTP to compromise and take control of the Oracle Concurrent Processing component. In a post shared on LinkedIn, Charles Carmakal, CTO of Mandiant at Google Cloud, said "Cl0p exploited multiple vulnerabilities in Ora...

Threat activity this week shows one consistent signal — attackers are leaning harder on what already works. Instead of flashy new exploits, many operations are built around quiet misuse of trusted tools, familiar workflows, and overlooked exposures that sit in plain sight. Another shift is how access is gained versus how it’s used. Initial entry points are getting simpler, while post-compromise activity is becoming more deliberate, structured, and persistent. The objective is less about disruption and more about staying embedded long enough to extract value. There’s also growing overlap between cybercrime, espionage tradecraft, and opportunistic intrusion. Techniques are bleeding across groups, making attribution harder and defense baselines less reliable. Below is this week’s ThreatsDay Bulletin — a tight scan of the signals that matter, distilled into quick reads. Each item adds context to where threat pressure is building next. Notepad RCE via Markdown L...