[judge2020]

On one hand, someone working infosec might also have access to a spare computer running tails, which they use to sell the exploit to a third party exploit customer, but only after reporting the exploit to the victim company to cover their tracks regarding liability for things like those IP logs. On the other hand, it's not uncommon for a vulnerability to be detected multiple times by different unrelated people, especially if that vulnerability makes itself know via semi-regular use of the product/service.