Vallourec

Challenges

Vallourec’s Active Directory supports 17,000 global employees. Management of the system is decentralized. “We have groups moving fast, and security is not the first thing admins think about when a boss is demanding a new solution be installed. Sometimes they make mistakes,” says Jeremie S., an Active Directory architect at Vallourec.

Those mistakes, if not identified and remediated, could be costly. Active Directory is a favored attack vector for bad actors who use its misconfigurations to move laterally across systems and escalate privileges. It is critical to catch misconfigurations early to reduce security risk and to prevent further misconfigurations.

The team was using scripts to manually check for misconfigurations, but the process was slow, and the team knew it wasn’t seeing everything. “The admins do things that we couldn’t even imagine. It may be evident to us that we don’t do it that way but for them, it can make sense during the implementation of a product,” says Gerald S, IT and Active Directory and identity architect at Vallourec.

These manual checks were performed periodically, allowing admins to continue to build off of misconfigurations and making them more difficult to fix when they were spotted. The team wanted to monitor Active Directory and track changes in real time, as well as restrict admin rights based on the operations they perform.

Solutions

Vallourec chose Tenable Identity Exposure to obtain the visibility and control it needed to effectively secure Active Directory. Tenable Identity Exposure enables the team to see every change in Active Directory, determine their risk level and exposure in real-time, and prevent attackers from using AD as a critical attack path.

The manufacturer worked with its managed SOC provider to integrate Tenable Identity Exposure into its SIEM. This involved simply opening a port and defining a target IP. Upon implementation, the team immediately noticed an improvement in the visibility it had of the AD infrastructure. “When we first installed Tenable, we had some security misconfigurations that we hadn’t detected before,” says Gerald, IT and Active Directory and identity architect at Vallourec.

Results

The team fixed those misconfigurations and is now automatically notified when Tenable Identity Exposure detects a change in Active Directory. “We can ensure that everything that we want to configure in terms of security or exception is still in place and no one can change it, not even us. If someone has the right to change something, we can see it directly. In fact, it’s a real time supervisor for me on the direct configuration,” says Jeremie.

The team is no longer focused on writing and running scripts to detect misconfigurations, and the time it does spend on fixing misconfigurations is greatly reduced. “We can capture the bad configurations quickly. One fix now, which takes five minutes, used to take five days or five weeks if the configuration had been replicated and we needed to make a lot of changes,” says Ben P., team lead for the infrastructure operations team.

One of the team’s favorite features is Trail Flow, which displays the real-time monitoring and analysis of events affecting the AD infrastructure and allows teams to identify critical vulnerabilities and their recommended courses of remediation. When new features are introduced to Active Directory, Trail Flow allows the team to see how those features impact the infrastructure. The team can also see fake authentication attempts, where around the world they’re originating from and whether they’re due to a misconfiguration problem or simply a problem on a domain. This visibility allows the team to drill into root cause and more efficiently address the issue.

The team also appreciates the Tenable Identity Exposure dashboard, which allows them to track alerts and see the evolution of their security efforts. The team has the visibility and control over Active Directory that it couldn’t otherwise achieve. “We wouldn’t be able to mirror what Tenable is doing and make it viable. It does the job it needs to do, and it does it well,” says Ben.