Currently work at an HFT firm. Most of the firms invest well into good DevOps, Trading Systems and SRE teams, to ensure that everything from installing a tradin

Currently work at an HFT firm. Most of the firms invest well into good DevOps, Trading Systems and SRE teams, to ensure that everything from installing a trading server at the colocation facility, to CI/CD and making changes to the systems configs, is done well. There are also guards in place to ensure that if the system seems to make trades that are way too odd then pull the plug and go down immediately. Also, any code that does not need to be there, is promptly removed right away. Where I work at, we have a few people from KCG i.e what was formed after Knight Capital merged with GETCO, after this incident. Sometimes this incident is bought up, although none of them I think ever worked for Knight Capital before this incident.