Someone that concerned with security is either fanatical, or they've been burned by it before. I also will not sign off on security concerns unless they are co

Someone that concerned with security is either fanatical, or they've been burned by it before. I also will not sign off on security concerns unless they are correct. I'm happy to let management override me, but I won't back down and say things are finished when they aren't. IMO, your tech lead wasn't the problem here. Their boss was. Their boss decided that the security was more important than the delivery date, or they decided that they didn't care enough to get involved, which amounts to the same thing.