Pretty much anywhere if you are let go, your email access and physical access are cut off immediately. Start-ups do this all the time as funding gets tight or there is a need to pivot.
I get that this sucks (and have been on the both the dishing out side of this and the receiving end of it multiple times). It is a fact of life. It would be more mature to move on rather than blog about how you feel wronged by your former employer. The next employer may see this post and reason that it is unsafe to hire this person because they feel a need to damage the company's reputation on the way out (for Google, there isn't much risk here, but for smaller companies, threats to the reputation matter).