What is syncAttackData doing?

Replying to the previous thread is not promoting the thread, so I am starting a new one.

https://www.ads-software.com/support/topic/firewall-sync-is-excesive/

“I am seeing the same issue on our main site, with multiple hits per second sometimes. What exactly is the syncAttackData doing? Is it a core feature or something we can disable? I haven’t checked the logs for all our sites, but the one site that I know is having this issue is also the only one that sees a substantial (for us) amount of malicious activity. We are using 6.1.14 on WP 4.5.3.”

So far I’ve only noticed this happening when there is an ‘attack’, but that’s also the only time I’m looking at the logs.