A major botnet operation that controlled an estimated 19 million IP addresses and was responsible for $99 million in illegal gains was shut down this week, and an international law enforcement operation arrested its primary operator.

Botnet operations may not be as top of mind as ransomware, but these attacks are still responsible for millions in losses and pose a massive threat to businesses and consumers. So, organizations must remain vigilant and remember the best defense against being struck with a Distributed Denial of Service (DDoS) or phishing attack is with a Managed Detection and Response (MDR) and email security solution.

The US Justice Department, working with officials in Singapore and Thailand, announced the disruption of the 911 S5 botnet and the arrest of YunHe Wang, 35, a People's Republic of China national and St. Kitts and Nevis citizen-by-investment. Wang was arrested on May 24 on criminal charges arising from his deployment of malware and the creation and operation of a residential proxy service known as "911 S5."

Between 2014 and 2022, the 911 S5 botnet was used to commit cyberattacks, large-scale fraud, child exploitation, harassment, bomb threats, and export violations.

Defending Against Bots

Stopping botnets is a difficult operation. Botnets are numerous, and their operators constantly update them to avoid detection and remain effective. However, organizations can take several positive steps to help.

Trustwave MDR: Proactive Threat Hunting

MDR goes beyond basic monitoring. Trustwave's MDR offering includes real-time threat detection, investigation, and response. Here's how it helps against botnets:

• 24/7 Security Expertise: You get a team of security specialists, the Trustwave SpiderLabs team, who are constantly on the lookout for suspicious activity. This includes identifying signs of botnet infections within your network.
• Threat Hunting: MDR goes beyond just reacting to threats. Trustwave actively hunts for potential vulnerabilities that botnets could exploit. This proactive approach can help identify and stop botnet infections before they take hold.
• Global Threat Intelligence: Trustwave has a vast knowledge base of threats, including the latest botnet tactics. This intelligence is used to constantly improve MDR's detection capabilities.

Trustwave MailMarshal: Stopping Botnets at the Door

Email is a popular entry point for botnet attacks. Trustwave's email security solutions, like MailMarshal, help fortify your defenses:

• Multi-layered Security: MailMarshal employs a combination of techniques to stop botnet-related emails, including spam filters, malware detection, and URL analysis. This layered approach helps ensure that even sophisticated phishing attempts are caught.
• Protection from Zero-Day Exploits: Botnets often rely on new, unknown vulnerabilities. Trustwave's security solutions are constantly updated with the latest threat intelligence to stop even zero-day attacks.
• Data Loss Prevention: Many botnets target sensitive information. Trustwave's email security can help prevent this data from leaving your organization accidentally or through a malicious botnet infection.

Combined Power: A Layered Defense

The true strength lies in combining Trustwave MDR and MailMarshal solutions. MDR provides a comprehensive view of your network activity, while email security focuses on the email gateway, a prime target for botnets. This combined approach creates a robust defense system that can significantly reduce the risk of botnet attacks.

Botnets are a serious threat, but you don't have to face them alone. Trustwave's MDR and email security solutions can be a powerful addition to your defense arsenal. By providing real-time threat detection, proactive threat hunting, and robust email security, Trustwave can help you keep your organization safe from botnet attacks.

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