"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."
"Following a late December 2025 coordinated cyber attack on Poland's power grid, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) has published a bulletin for critical infrastructure owners and operators. CISA said vulnerable edge devices remain a prime target for threat actors, OT devices without firmware verification can be permanently damaged, and threat actors leverage default credentials to pivot onto the HMI and RTUs."
Attackers are favoring proven tactics over novel exploits, leveraging trusted tools, familiar workflows, and visible exposures to gain and extend access. Initial access techniques are simplifying while post-compromise operations become more deliberate, structured, and persistent to maximize value extraction. Cybercrime, espionage tradecraft, and opportunistic intrusion techniques are converging, increasing technique sharing and complicating attribution and defensive baselines. Critical infrastructure remains exposed due to vulnerable edge and OT devices lacking firmware verification and default credentials. Operators should prioritize firmware-verifying updates, eliminate default passwords, require integrator password enforcement, and maintain incident response plans and playbooks.
Read at The Hacker News
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