What the government shutdown teaches us about cybersecurity

The partial shutdown of the U.S. government last month prevented ranchers from applying for farm loans, Coast Guard personnel from getting paid and tourists from visiting the Smithsonian Institution. It also had an impact on cybersecurity. For example, the security certificates used by more than 130 US government websites expired, which made it easier for threat actors to trick people into visiting malicious sites that masquerade as legitimate government sites, until they were renewed when the government reopened.

This week, as lawmakers face a Friday deadline to prevent a second closure, the negative impact on the public and private sectors is in danger of repeating. Here’s what’s at stake.

Outdated NIST guidelines leave the private sector in the dark

The website for the National Institute of Standards and Technology (NIST) wasn’t updated from December 22, 2018, until January 28, 2019 — making it essentially offline for more than a month. With NIST shut down, cybersecurity professionals couldn’t access the technical documents that help them architect their organizations’ security programs. Many use NIST standards to evaluate security tools and as a reference on how to implement security technologies. Without this documentation, security practitioners were hindered from trying to roll out strong security measures; with NIST down, they weren’t able to make sure that they followed best practices during security rollouts.

Returning employees experience alert fatigue

A backlog of threat alerts and log files likely greeted federal government security professionals when they eventually returned to work. To handle the flood of alerts, analysts may have focused on the most recent ones and, because of time constraints, overlooked the older ones. If overlooked activity turns out to be a successful infiltration, there’s a chance that attackers could still be in a government network without anyone realizing it. Spotting and immediately investigating suspicious activity is the defender’s best chance of minimizing the damage caused by a data breach, especially since attackers prefer “low and slow” operations to decrease the likelihood of being detected.

Password resets lead to weakened security

Password resets are inevitable after the government reopens. With so many employees not working for more than a month, many of them may have forgotten their login credentials. In other cases, some agencies may have password management policies that require workers to change their passwords after a certain period of time (every 60 days, for example). Miss the deadline and they’ll have to reset their passwords.

In both cases, help desk employees who handle password resets likely were inundated with requests. To get people back to work faster, the help desk may have relaxed password management policies by permitting the reuse of old passwords. While this approach would get government agencies online faster, attackers could benefit from this situation since password reuse is rampant, a fact not lost on adversaries, who could leverage weakened passwords policies as they search for ways to infiltrate government defenses.

Read the rest of this column on Dark Reading, where it was first published.

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