Cybersecurity Brief – 2026-03-20

Fri, 20 Mar 2026 00:00:00 +0000

Major Incidents or Breaches

Navia Benefit Solutions disclosed a data breach impacting approximately 2.7 million individuals, with sensitive information exposed to attackers.
Security firm Aura reported a breach affecting 900,000 records after an employee was targeted via phone phishing, leading to data theft from a marketing tool.
Marquis confirmed a data breach affecting 672,000 individuals, with previous estimates suggesting over 1.6 million may be impacted.
Medical technology company Stryker suffered a destructive cyberattack that wiped around 80,000 devices. The FBI subsequently seized Handala hacktivist group’s data leak sites used to publicise the breach.
Bitrefill, a crypto-powered gift card store, attributed a recent cyberattack to North Korean Lazarus (Bluenoroff) group activity.
Ex-data analyst convicted of stealing company data and attempting to extort $2.5 million from Brightly Software while still employed as a contractor.

A critical “PolyShell” vulnerability affects all Magento Open Source and Adobe Commerce stable version 2 installations, enabling unauthenticated remote code execution and account takeover.
Ubiquiti patched two vulnerabilities in the UniFi Network Application, including a maximum-severity flaw that could allow account takeover.
A critical Microsoft SharePoint vulnerability, patched in January, is now being actively exploited in the wild.
ScreenConnect issued an update to address a critical vulnerability exposing machine keys, now adding encrypted storage and management for enhanced protection.

Russian APT28 (GRU-linked) is exploiting a Zimbra Collaboration Suite vulnerability in attacks targeting Ukrainian government entities, leveraging insufficient sanitization of CSS content in HTML emails.
Multiple threat actors have been using the DarkSword iOS exploit kit, which chains six vulnerabilities (including three zero-days), for full device takeover since at least November 2025. Apple has issued warnings to users of older, unpatched iPhones.
North Korean Lazarus (Bluenoroff) group is linked to the cyberattack on Bitrefill.
Iranian threat actors prepared cyberattack infrastructure over a six-month period, including the use of US-based shell companies, to increase their operational resilience ahead of recent kinetic events.

EDR killer malware continues to evolve, with 54 EDR killers leveraging the Bring Your Own Vulnerable Driver (BYOVD) technique to exploit 35 signed vulnerable drivers and disable endpoint security solutions.
New Android malware family “Perseus” is actively targeting devices for takeover and financial fraud, monitoring user notes apps to extract sensitive data such as passwords and recovery phrases.
Speagle malware is hijacking the legitimate Cobra DocGuard program to exfiltrate data via compromised servers.
Recent DDoS botnet takedowns (Aisuru, Kimwolf, JackSkid, Mossad) highlight the continued threat from large-scale IoT botnets, with over 3 million infected devices used in record-breaking 31.4 Tbps attacks.
MCP (Model Code Provider) security issues in LLM (Large Language Model) environments are considered architectural and not easily patchable, posing ongoing risks.
Attackers are increasingly targeting password reset workflows for privilege escalation; security guidance has been issued to harden these processes.
Criminals are actively trading stolen tax records on dark web forums during tax season, with tax forms selling for as little as $20.

The US Department of Justice, in cooperation with Canadian and German authorities, dismantled the infrastructure behind several major IoT botnets, including Aisuru, Kimwolf, JackSkid, and Mossad.
CISA issued advisories urging organisations to secure Microsoft Intune endpoint management systems, following their exploitation in the Stryker cyberattack.
Major providers are piloting quantum-safe HTTPS, reducing certificate size and improving both latency and transparency.