OK. Thanks... But "especially if there is a question about my performance of my duties. o_O" seems like you're missing the point. The "boss" should have checked things out, in my opinion, before accusing.
But I get it and thanks for all the advice - I honestly thought HR was there for exactly...
This guy has been making my life miserable for the past month or so - Cost me my job? Really? Don't want that to happen but a misunderstanding would have been his pulling me in to his office and simply asking me "Hey...Did you change the notes"? Instead, he accused me of doing so and cc'd...
So...My boss's boss sent me an email the other day and cc'd another employee; basically, the email accused me of deceptively altering the notes "lying" in our company's order tracking system. It started with the "boss" asking me to update notes in the system. After looking in the system, I saw...