"All these security breaches of our personal financial info. is beginning to sound suspicious."
People rob banks because thats where they keep the money.
People hack computers because that's where they keep the data.
My job is to fly around to our customers, break into their networks, and teach them how to keep the bad guys out. Many of our clients are well known companies and state and local government agencies. I can tell you that there has never been a penetration test we've done which if it was scoped to include a large enough segment of a customers internet facing network and enough time, we haven't been able to penetrate systems and use them to access other internal systems. We also do similar tests while plugged directly into our customers network to simulate a disgruntled employee, industrial espionage, etc. Internal networks are even less securely configured.
Windows, UNIX, it doesn't make a hell of a difference in an enterprise network.
Would a disgruntled ex-employee from a company like yours be a likely suspect in these hackings?
There's no way any info in an electronic environment can be safe is there?