How to Stop a Ransomware Attack

Key Takeaways

  • Stopping ransomware depends on strong endpoint security, quick containment, and ongoing oversight.

  • Early signs include suspicious file encryption, weird user account behavior, and abrupt system slowdowns.

  • Endpoint detection and response (EDR) solutions watch endpoints in real time, helping you isolate infected devices before damage spreads. Huntress Managed EDR blends EDR technology and human expertise to spot and remove threats so your business can keep running.




Ransomware can feel like the ultimate hostage situation: Your files get locked up and threat actors demand a payout for their release. No business wants to lose their data, pay out fat ransoms, or shut down for who knows how long. 

When ransomware strikes, every minute counts. But if you’re scrambling to figure out how to stop ransomware after an attack hits, you’re already behind. If you want to know how to stop ransomware, it takes fast action, proactive measures, and the right tools to keep your data from falling into attackers' hands.

How to Stop a Ransomware Attack

Key Takeaways

  • Stopping ransomware depends on strong endpoint security, quick containment, and ongoing oversight.

  • Early signs include suspicious file encryption, weird user account behavior, and abrupt system slowdowns.

  • Endpoint detection and response (EDR) solutions watch endpoints in real time, helping you isolate infected devices before damage spreads. Huntress Managed EDR blends EDR technology and human expertise to spot and remove threats so your business can keep running.




Ransomware can feel like the ultimate hostage situation: Your files get locked up and threat actors demand a payout for their release. No business wants to lose their data, pay out fat ransoms, or shut down for who knows how long. 

When ransomware strikes, every minute counts. But if you’re scrambling to figure out how to stop ransomware after an attack hits, you’re already behind. If you want to know how to stop ransomware, it takes fast action, proactive measures, and the right tools to keep your data from falling into attackers' hands.

What is ransomware?

Ransomware is a type of malware that takes your data hostage, encrypting files so that scumbags can demand a payout (usually in crypto) to decrypt them. It’s especially damaging because attackers often threaten to leak or sell your stolen data if you refuse to pay. We’ve all seen the headlines where entire networks grind to a halt, causing huge headaches or forcing teams to rebuild systems from scratch. 

The good news? You don’t have to let those creeps win.


Ways to stop ransomware

The first step is building a plan for preventing a ransomware attack from happening in the first place. Attackers often get in through a single compromised endpoint, like a raccoon sneaking in through a cat door, so securing those devices is essential.

Can you stop a ransomware attack?

If you spot suspicious activity early enough, you can squash ransomware. Think of it as heading off the bad guys at the pass. One of the best ways to do that is by using endpoint detection and response (EDR). EDR keeps eyes on your endpoints around the clock, flagging strange files or sudden encryption attempts. If you’re notified at the first sign of trouble, you can move quickly to shut down the threat.


What’s the first thing to do in a ransomware attack?

If you realize an attack is already going down, your top priority is to contain it. Identify the infected endpoints and disconnect them from your network right away—that’s how to stop ransomware from spreading across your entire environment. After that, make sure you assess the damage—investigate which files or systems were hit, preserving evidence along the way—and activate an incident response plan, notifying key stakeholders and law enforcement, if necessary. Other key steps include changing passwords and locking down any suspicious user accounts.

It might feel a little chaotic in the moment, but fast containment buys you time to regroup and plan your next steps.


How to stop a cyberattack before it turns into ransomware

Stopping ransomware often means knowing how to stop a cyberattack at its earliest stages. Phishing emails, malicious attachments, or unpatched software are just a few ways attackers sneak in. Your employees are on the frontline, making them the prime target for attackers. By training your team to spot phishing emails, malicious attachments, or suspicious behaviors, you can cut down the risk of ransomware infection. Closing these gaps—along with keeping software up to date and monitoring network traffic—will reduce the odds of a breach. 

If your defenses do fail, quick detection is your next best bet. Solutions that combine endpoint detection technology with human expertise help you catch ransomware at the earliest possible moment. For instance, you can use Ransomware Canaries as decoy files that trigger alerts as soon as they’re touched, giving you an immediate heads-up that ransomware is active. 


How to stop ransomware from spreading

Ransomware likes to move laterally, jumping from one machine to another until it locks down everything it can. Once you know you’ve been hit, act fast. Isolate compromised devices, check for and revoke newly created accounts with escalated privileges, and use strong security policies to limit who can access critical data. The goal is to keep the threat from worming through your network, which would make the cleanup way worse.


Can ransomware be undone?

If you have clean, offline backups, you might be able to restore your files without paying a dime. But that doesn’t mean everything will immediately go back to business as usual.

Attackers might still have stolen sensitive information or messed with your system settings. 

Undoing a ransomware attack isn’t just a matter of decrypting files—it’s also about investigating the root cause, patching holes, and making sure your data’s integrity is intact. That’s why prevention and early detection are key: Prevention is always better than intervention.


Why go to Huntress for ransomware attack protection?

Figuring out how to stop ransomware doesn’t need to be confusing. Huntress Managed EDR helps you spot trouble early and cut it off at the source. Our platform scans endpoints for malicious processes, giving you quick alerts whenever something looks off. We don't just detect threats—we isolate compromised endpoints and shut down shady processes fast. 

Plus, with Huntress, you get a Security Operations Center (SOC) that keeps an eye on your endpoints 24/7, identifying suspicious behavior that basic antivirus and basic security software often miss. Our security experts review suspicious alerts, stopping false positives from wasting your time and guiding you through real threats. If your system’s under attack, you can lock down compromised devices and remove harmful files before ransomware spreads.

See firsthand how Huntress can protect you by identifying, stopping, and eliminating ransomware threats before they jack up your organization. 


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