Five Methods For Database Obfuscation

[ProgrammerAlias]

One question: what method was used to obfuscate author's nickname?

[o6CuFl2Q]

This method:
base64 < /dev/urandom | head -c8

[o6CuFl2Q]

This article in Russian: habr.com/en/company/yandex/blog/457354

[Blavoie]

What tools is used for your benchmark runs and reporting in the first screenshot?
I would like to use this kind of tool for my benchmarks and reporting comparisons visually
Thanks