It is not you, it is a Linux Zero-Day Avalanche The long-held illusion of inherent Linux security has shattered. The operating system isn't taking a beating from a wave of new malware—it is being structurally dismantled by an avalanche of zero-day vulnerabilities unearthed by agentic AI. For years, a dangerous myth persisted across many IT departments: Linux is secure by default. Because commodity malware and phishing historically targeted Windows endpoints, Linux systems, th

How an AI based Search can turn a mundane task like searching for the best food for my cat can Hijack Your Identity As organizations rush to deploy autonomous AI agents to manage daily workflows, a critical flaw in how these models process data has opened a dangerous new exploit vector: Indirect Prompt Injection. For decades, basic human skepticism has been our strongest frontline defense. If a regular user scrolls through an online forum like Reddit and spots an out-of-conte

Deploying a SIEM (Security Information and Event Management) system within your infrastructure provides immense value and helps you check off critical requirements during an ISO 27001 certification audit. A robust SIEM drives compliance by extracting actionable value from the logs you already collect and store. Benefits of Deploying Sentio SIEM Centralized Environment: Sentio SIEM serves as a centralized housing for all your logs. It seamlessly ingests data from mainstream so

On July 2nd, 2025, a user known as 'Admirable-Raccoon597' on reddit claims to have downloaded a mouse configuration tool from their official website. Upon noticing suspicious activity, they investigated further and discovered that the software contained a hidden trojan identified as 'Synaptics.exe'. This incident was not isolated; another user reported finding similar malware embedded within the software for another gaming mouse utility tool. Talk about a mouse becoming a RAT

FortiGate Devices Under Increased Attack: What Organizations Need to Know Over the past several months, Fortinet customers have faced a series of security incidents involving FortiGate firewalls. Recent campaigns have demonstrated how quickly threat actors can move from initial access to full administrative control of a device, often creating unauthorized accounts, modifying firewall configurations, and establishing persistent access before organizations realize they have bee

Automated scale with human insight to build an evolving defense Let’s say it’s 10:00 PM Friday. A User opens a Phishing email before finishing work for the day. Ten minutes later, automated malicious tools breach the account and begin aggressively downloading the organization’s entire mailbox infrastructure. If enterprise relies strictly on manual tracking, security operations center (SOC) won't see this activity until they log in at 9:00 AM on Monday morning. Because modern

Predictable Local Activity May Reduce Analyst Vigilance For SOC analysts who spend their days triaging Microsoft 365 login events, the daily routine often falls into a predictable pattern. Security teams often implement a binary triage logic: local logins are automatically marked as benign, while foreign logins undergo a deeper analysis verification. This creates a dangerous security gap. Logins from local IP: Check the sign-in IP \rightarrow If it’s a local IP \rightarrow Cl

A Linux system is running normally, with no alerts, no suspicious activity, and nothing out of place. Somewhere in the background, however, a low-privileged account exists on that machine, this could be a compromised user, a container escape, or simply reused credentials that were never rotated. At some point, that access is used, not to deploy malware or trigger alarms, but simply to execute a small piece of code that blends into normal activity. Moments later, the attacker

How adversaries bypass Multi-Factor Authentication and the continuous analytics required to stop them. For years, organizations relied on a singular security gospel: enforce strong passwords, enable Multi-Factor Authentication (MFA), and your cloud environments are secure. For a long time, this layer of defense worked efficiently by neutralizing bulk credential stuffing and basic phishing campaigns. However, the threat landscape has shifted dramatically, and sophisticated adv

Security incidents are solved through context and correlation - not alert queues. Most SOC environments are optimized for speed. Analysts are measured by ticket closures, SLA adherence, and alert throughput. On paper, that sounds efficient. In practice, it creates a dangerous habit: reviewing alerts instead of investigating incidents. An alert is not an investigation. It is a signal that something may require attention. Yet many security teams treat alerts as isolated tasks i

A deep dive into the operational shift from patching static vulnerabilities to validating autonomous system logic. To understand how Cyber Reasoning Systems (CRS) are rewriting the attack surface, you first need to shift how you think about “what is being attacked.” At CyberSift, telemetry shows that Security Operations Center (SOC) analysts are increasingly interacting with CRS framework architectures, and their daily work is already being shaped by it. Instead of drowning u

A blunt reality check for financial institutions transitioning from checklist compliance to operational maturity. It’s been over a year since the Digital Operational Resilience Act (DORA) became fully applicable. For many financial institutions, 2025 was a year of frantic patching, manual spreadsheet mapping, and "checking the box" to meet the deadline. But as we settle into 2026, a new crisis is emerging: Resilience Debt. What is Resilience Debt? Just like "Technical Debt" i

A pragmatic guide to turning employee-driven telemetry blind spots into manageable, secure visibility. In the past, "Shadow IT" meant an employee bringing their own laptop to the office or installing an unauthorized piece of software to get their work done. Today, that trend has evolved into something much faster and more difficult to track: Shadow AI. At CyberSift, one of our motto is "you can't protect what you can't see." Shadow AI isn't just a policy violation; it's a ma

Recent Linux LPE vulnerabilities highlight how limited telemetry delays detection and response. Linux systems sit at the center of modern infrastructure. They run production workloads, cloud platforms, development environments, and critical internal services. Because of that, they are often seen as stable and trustworthy by default. Recent Linux privilege escalation vulnerabilities, including Fragnesia (CVE-2026-46300), Dirty Frag (CVE-2026-43284, CVE-2026-43500), and Copy F

Over 1 Million Alerts — What’s Behind That Number? Over the last 7 days, this environment generated 1,107,211 alerts. At first glance, that sounds like strong security coverage. But here’s the reality: More alerts don’t mean more protection — they often mean more noise. The real question is not how many alerts were generated, but: How many of these actually matter? Use Case: SMB to Public IP To understand how this pattern behaves across the environment, we zoomed into a speci

The recent supply chain breach at Vercel highlights a critical blind spot: once an attacker hijacks a valid OAuth token, they don’t need to crack your password, they simply inherit your trust and walk right past your MFA No password is needed No MFA challenge is triggered No anomalous login event is created while the user is accepted Once a session token is issued, access is governed by the token alone, completely detached from the factors that created it. This is what an OAu

Cybersift is observing a modern type of phishing attacks on Office 365 users which deviate from the typical fake login web page, we analysts are typically accustomed to seeing. The new phishing attack utilizes device registration to compromise the victim’s account, meaning that the threat actor does not require to steal your password to gain entry. But this modern phishing attack is smarter than you might think. Case Study We analyzed a phishing email which utilized a device

Introduction As the digital backbone for millions of enterprises, Microsoft Office 365 has become the primary option for modern identity-based warfare. Today’s attackers don't just "log in" they meticulously craft digital fingerprints to mirror legitimate employees, attempting to slip past automated defense unnoticed. This analysis explores a high-severity incident where a corporate account was compromised through a combination of network anonymization and device metadata man

The visibility problem we keep running into Most SIEM deployments follow a familiar pattern: collect logs, apply rules, generate alerts. That approach works, but it starts to break down in one area we regularly see during investigations - telling the difference between legitimate activity and attacker behavior when both look the same. Attackers are no longer relying on obviously malicious tools. They use valid credentials, built-in admin utilities, and approved access paths.

There is a recurring assumption in many environments: if the SIEM is properly configured, detection is “solved.” In reality, SIEMs don’t detect threats - they execute logic. And that logic is only as good as the assumptions behind it. What we consistently observe in real-world incidents is not a lack of SIEM coverage, but a lack of detection engineering discipline. At CyberSift, this is one of the core areas we continuously invest in: expanding, validating, and maintaining de