Microsoft’s Honeypots: Trapping Cybercriminals in Realistic Virtual Environments for Stronger Defense
In an eye-opening presentation at the BSides Exeter security conference earlier this year, Microsoft security engineer Ross Bevington revealed the company’s latest innovation in its ongoing battle against phishing: the use of “honeypot tenants.” These carefully designed, virtual environments simulate real Azure infrastructure, creating realistic traps to lure cybercriminals into revealing their strategies and tactics. By utilizing these decoy systems, Microsoft is able to monitor and analyze the behaviors of scammers, improving its ability to prevent future attacks and protect users from phishing.
The primary aim of Microsoft’s honeypot strategy is to understand the inner workings of phishing campaigns and identify weaknesses that can be exploited to mitigate risks. To do this, the company created “honeypots” — fake, yet convincing environments — designed to attract cybercriminals. However, what makes Microsoft’s approach unique is its proactive nature. Instead of passively waiting for attackers to stumble upon these honeypots, Microsoft takes the fight to the scammers by feeding fake data to well-known phishing sites. These sites, which attract cybercriminals on a regular basis, serve as the perfect place to lead the fake user accounts to, increasing the likelihood that they will engage with the decoys.
One of the standout examples Bevington discussed was the retired code.microsoft.com website, which served as a prime example of a honeypot used to collect data on phishing attacks. The site was designed with a range of artificial user accounts that mimicked real human interactions, including sharing files, sending messages, and participating in fake activity. These synthetic accounts were not just left to sit idle either — they were instructed to visit websites that were known to harbor phishing attempts, deliberately bringing them into the line of sight of cybercriminals.
Once these attackers engage with the honeypots, Microsoft gains access to crucial data about their methods. The company monitors more than 25,000 phishing websites on a daily basis, feeding 20% of these sites with data from the honeypots. Of those, approximately 5% of the attackers fall into the trap, interacting with the decoy systems. Microsoft then tracks their actions for an average of 30 days, with the attackers typically only realizing they’ve been deceived after a month of activity. This gives Microsoft ample time to collect detailed information about the tactics, tools, and processes employed by these criminals.
What makes Microsoft’s honeypot strategy particularly effective is the diversity of the attackers it has been able to ensnare. While many smaller, opportunistic hackers are caught in the traps, the company has also successfully lured sophisticated and high-profile groups. For instance, the Russian hacking group Midnight Blizzard (NOBELIUM) — known for targeting Microsoft’s own infrastructure in major cyberattacks — has been trapped in Microsoft’s honeypots. This success allows the company to deepen its understanding of advanced phishing techniques used by state-sponsored and criminal organizations alike.
Through its honeypot program, Microsoft is not only gathering intelligence about phishing attacks but is also refining its security systems and strategies to build more resilient defenses. By leveraging this wealth of data, the company is able to better protect its infrastructure, improve its response to phishing campaigns, and develop more effective tools for users to stay safe from scams.