Sophos 资源 - 有助阻止 勒索软件

Smart companies develop and deploy multiple layers of ransomware mitigation that encompass prevention, detection, and response. Ransomware mitigation involves a series of best practices and tools that focus on each of these aspects. For example, prevention may involve deploying multifactor authorization (MFA) and regular backup of data. Prevention also includes providing regular employee training to help users recognize the signs of a phishing attack that may be linked to ransomware. Detection focuses on monitoring for any signs of suspicious behavior linked to ransomware. The best ransomware detection leverages endpoint detection and response (EDR) or managed detection and response (MDR), as well as extended detection and response (XDR). And finally, response to a ransomware attack involves incident investigation and forensics, as well as sophisticated threat hunting to get the most value out of your ransomware mitigation efforts.

The average user may not detect a ransomware attack on their systems until it’s too late. However, trained security professionals with the right detection and response tools can often spot unusual activity that may indicate a ransomware attack is imminent. There are a few different techniques security professionals use to detect ransomware attacks. They involve a mix of automation and human investigation and analysis to discover malicious files early. An example of automation is signature-based ransomware detection, which compares a ransomware sample hash to known signatures. Endpoint detection and response platforms and Next Generation Antivirus software can work together to monitor, capture and analyze data extracted from an executable file to determine whether it’s ransomware. Most antivirus software takes this step in a scan for malicious software. Behavior-based ransomware detection is more in-depth. Experienced security analysts know that ransomware’s behavior is its Achilles' heel, which is why professionals in a Security Operations Center (SOC) spend so much time studying it. Security professionals use their expertise along with robust tools to compare recent behaviors within the network or systems against average behavioral baselines. For example, has an employee accessed a desktop machine remotely from another state, when the employee has been logged in from the office all day? Security teams can examine traffic patterns for any anomalies and further investigate anything that appears suspicious.

An MDR provider delivers around-the-clock security monitoring across its IT environment. It also ensures that a company can proactively hunt for ransomware and other cyber threats and protect against them. With MDR, your company’s data and systems are backed by a team of experienced threat hunters, engineers, ethical hackers, and security operations specialists. Together, these cybersecurity professionals search far and wide for cyber threats like ransomware. If any threats are identified, they are resolved right away. The threats are also evaluated, ensuring a company can protect against such issues moving forward.

New ransomware variants are created and released every day. The only way to mitigate harm is to detect and block ransomware before it can take root. The result is a continuous struggle between defenders, with their security controls and detection systems finely tuned to spot suspicious code and behavior, and adversaries, with their ever-evolving bag of tricks designed to outfox these controls – or to get the job done before the controls catch up with them.