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70% of Cybersecurity Pros Often Work Weekends
(www.infosecurity-magazine.com)
This is a most excellent place for technology news and articles.
You gotta understand the skill set is highly specialized and is ever-evolving. The issue likely being that many take on their six figure salary and aren't paid for their weekend work but instead work to ensure the security of the employer.
If I'm hired for $120k/yr for a 40hr week, but I'm pulling 46-52hr weeks, I would feel the need to be appropriately compensated for it. If it's going to be considered a work hazard I would expect to receive hazard pay.