Intelligence agency can be hacked, so can you. In essence, nobody is completely safe. You stand out significantly less than government agencies, which is a significant distinction.
“Out of sight, out of mind,” as the saying goes. When fighting off future attackers, this is the most effective preventative measure you can take.
You can make little strides by eliminating recognizable data from your web-based entertainment accounts; Birthday, place of employment, city, etc. Most importantly, avoid accounts or individuals who request personal information.
Everything else becomes like “pulling a thread” as soon as they have even a small amount of your personal information.