For Reese, leaking the headquarters' address was undeniably a serious breach of security, but the actual consequences weren't as severe.
Firstly, he wasn't the only one who knew the address, so the higher-ups wouldn't suspect him immediately.
Secondly, it wouldn't cause any serious consequences because, officially, they were a legitimate organization with their own bases, factories, and research facilities.
Moreover, headquarters was equipped with an extremely strong security force. Those who had the capability to challenge them wouldn't, and those who had the intent lacked the capability.
He didn't believe Li Ang would actually go to their headquarters. If Li Ang really had the strength and confidence to attack, the organization probably wouldn't have time to investigate who leaked the address.