Prevent Ransomware Blog

Russian Hacks Show Need for Isolation and Containment Security

Written by Tony Chiappetta | Sep 22, 2025 9:00:00 AM

A recent report from Reuters highlights a growing cyber risk: Russian state-backed operatives have been exploiting an old Cisco software vulnerability to compromise thousands of networking devices tied to U.S. critical infrastructure. (reuters.com)

These attackers, linked to Russia’s FSB Center 16, are not just snooping. Over the past year, they have been collecting configuration files in bulk, and in some cases, altering them to enable long-term access. Their focus extends deeply into industrial control systems such as the networks that run electricity, water, and transportation. (reuters.com)

What This Means for Businesses

  1. Old vulnerabilities remain a huge weakness. The exploit involves a seven-year-old vulnerability in Cisco IOS. Many targets were using unpatched or end-of-life devices, leaving the door wide open.

  2. The goal is not always immediate disruption. Attackers often start with reconnaissance, gathering network maps, configuration files, and credentials. Then they prepare to modify, move laterally, persist, and escalate.

  3. Traditional detection tools are one step behind. Once attackers are inside, detection only tells you after the fact. By the time alerts start firing, the damage is often already underway.

Why Isolation and Containment Should Be Your First Line of Defense

When detection alone is not enough, containing threats early and restricting their movement is what prevents a small compromise from becoming a full-scale breach.

  • Isolation makes sure that if an endpoint is compromised, the threat cannot easily spread.

  • Containment limits what attackers can do. Even if they get inside, they cannot freely roam, change configurations, or undermine systems.

Shifting from a detect and respond mindset to isolate and contain requires rethinking how we protect endpoints. It means proactively defending, not waiting for alerts.

AppGuard: Proven Endpoint Protection

This is where AppGuard changes the game. With over a decade of proven results, AppGuard works differently from traditional anti-malware or EDR tools:

  • Proactive protection. AppGuard blocks unauthorized code execution, privilege escalations, and unwanted changes to system configuration.

  • Built-in isolation. If an endpoint is targeted, risky processes are contained so they cannot infect or control critical systems.

  • Minimal reliance on signatures. AppGuard does not depend on identifying known malware, making it effective against zero-day threats and old exploit techniques.

  • A trusted track record. For more than 10 years, AppGuard has stopped many of the most damaging lateral movement and persistence attempts.

What Business Leaders Need to Do Now

  1. Audit your infrastructure. Identify outdated, unpatched, or end-of-life devices, especially networking gear.

  2. Adopt isolation-based endpoint protection. Do not just detect threats, stop them in their tracks.

  3. Move security focus upstream. Design systems to contain breaches before they spread.

  4. Educate your team. Make sure people understand why containment matters and how AppGuard works differently from traditional antivirus or EDR.

AppGuard vs Detect and Respond Tools

Detect and Respond Approach AppGuard’s Isolation and Containment Approach
Alerts after malicious behavior is recognized Prevents malicious behavior from executing in the first place
Depends on signatures and heuristics Uses policy enforcement and isolation to block unknown threats
Focuses on remediation after compromise Stops escalation or damage immediately
Attackers can persist and move laterally Containment prevents free movement even if breach occurs

The Bottom Line

The Russian cyber espionage case shows how adversaries exploit old vulnerabilities, unpatched devices, and weak containment strategies. When detection tools trigger, the worst may already be underway.

Isolation and containment with proven tools like AppGuard make the difference between cleaning up a breach and preventing it from escalating into disruption, reputational harm, or financial loss.

Call to Action

Business owners and security leaders: do not wait until your configuration files are stolen or backdoors are planted inside your systems.  Talk with us at CHIPS about how AppGuard can stop these incidents before they spread. It is time to move from detect and respond to isolation and containment. Reach out today and secure your endpoints before the worst happens.

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