This is a lesson in OPSEC.
>Varnell appeared on the radar of federal anti-terrorism authorities after an acquaintance reported his intention to blow up the Federal Reserve Building in Washington D.C. with a bomb similar to the one used in the 1995 Oklahoma City Bombing.
>Varnell was eventually introduced to an undercover FBI agent who he believed was nicknamed “the professor.” They discussed plans for building a bomb and carrying out Varnell’s plot.
Don't trust anybody who is 'introduced' to you. Don't trust your normie friends.
Practice OPSEC and vigilance.