As a security professional, not much scares me. I've seen my personal data stolen numerous times, watched nationstate hackers spray zerodays across the internet, and I'm a shameless user of TikTok. But now you have someone sitting on top of the personal data of several billion users, someone who has a long track record of vindictive harassment, someone who has the ear of the far right, and someone who has just shown us his willingness to weaponize internal company data to score political points. That scares me a lot.