I don’t think this is topic is relevant for cybersecurity.
I’m pretty sure that the ceo killer dude would’ve been smart enough to find almost anyone he wanted to and without buying from data brokers… you can’t really have a fully private secret life if you are in such a position at a large company…
just to prove the point, I just asked chatgpt when and where the CEOs of HP, Intel, Tencent, Nvidia and Bytedance will have their next public events, it was able to give me the info for HP and Nvidia:
Enrique Lores, CEO of HP Inc., is set to appear at HP Imagine 2024 on December 19, 2024. This event will focus on unveiling new innovations related to AI and transformative workplace technologies. The event will be streamed online, showcasing HP’s forward-looking developments
NVIDIA CEO Jensen Huang’s next public event will be his keynote speech at CES 2025. It is scheduled for Monday, January 6, 2025, at 6:30 PM PT, held at the Mandalay Bay Michelob ULTRA Arena in Las Vegas, Nevada. This keynote is part of the CES 2025 event, which runs from January 7–10, showcasing the latest advancements in technology, including innovations from NVIDIA
(i didn’t check if that was correct, but I’m pretty sure you can get some correct info as easy as this.)
at the same time, I’m also pretty sure dumb people wouldn’t even bother with data brokers and just wait in front of the main building everyday for a week if they wanted to get the CEO of some company…
so, to answer your question: no. i think most databrokers are a scam.