They use Wordpress?
Given the number of times that Wordpress has had.... shall we say... issues, I'm surprised anyone still uses it. Most people I know will never knowingly go to a page hosted there.
The website for the Internet Systems Consortium, which develops the BIND DNS and ISC DHCP tools, has been hacked. Anyone who recently browsed ISC.org is urged to check their PC for malware as miscreants booby-trapped the site to infect visitors. The website has been replaced by a placeholder page warning netizens of the attack …
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The content very rarely changes, and when it does the change is just an additional row to the top of a table and updating a link to point to a newer version of the manual / code repository / download location.
Just using Static HTML and some basic CSS, you could potentially reduce server costs by a substantial amount (Fewer processor cycles needed to build pages, less cruft added to the pages themselves, fewer servers now that a DB is no longer needed, etc). Plus no longer needing someone with WordPress skill on staff means they could hire someone to update the code.
Something like the OpenBSD website would be perfect for the ISC, a simple site that is centered around getting in, finding your answer / downloading the latest code, and getting out without wasting a lot of bandwidth and processing power to render crazy menu trasitions.