You scared me Bill, I thought you were going to take a dump on this site!!!
Its entirely possible that they were hacked. Its also possible that YOUR browser/machine was hacked though you would probably be seeing that in other places as well.
#2 closing the browser isn't sufficient. You need to clear your cookies and website data as well. Login tokens are generally saved in cookies but might be saved in session data on your browser. They are similar but very different concepts and both are saved on your browser.
You might try updating to the latest version of your browser or try a different browser.
Are you certain that you went to the DiveAssure site and not to an imposter trying to steal your information? Did you respond to an email to get there? Its entirely possible to be directed to a fraudulent site masquerading as a legitimate site to steal data. This generally happens through email links but its possible that they were hacked and all requests for them are forwarded to a fraudulent site. Check the domains very closely.
LOL - Scott, thank you for your input. I don't have any ongoing problems with SD, and certainly if I did dump on this site, I would not be surprised if the post was 'lost'. SD is Kamala's site, I'm grateful she doesn't market the data she collects. I'm slowly becoming anti- internet/technology. I'd classify it more as a rant, than a dump. I'll dump on technology in general, after I answer some of your concerns.
The laptop I use is less then 6 months old [of course I don't know how long it was between manufacture and my purchase], so I don't believe there could be a problem of outdated software.
I'm very careful to only deal with 'official' websites and not 3rd party portals. This philosophy is extended to emails [& even phone calls] received from unknown parties. Emails from unknown sources are 'trash' w/o opening, phone calls, if no voicemail is left, the number gets 'blocked'.
Now onward to the DUMP.
In 1949, George Orwell published '1984', envisioning an all knowing/seeing 'Big Brother', in superpower governments. Today, the problem is governments are not the only ones generating powerful data bases. Now we have, Facebook, Google, ad infinitum. In fact, every internet/communication based software/app is based upon building a data base of information, where you go, what you own, who you associate with.
Recently, a resolution of the United Nations, directed the consortium of US companies which manage internet standards, to turn over their responsibilities to a UN technical committee, run by the Chinese. With the incidents of hacking on the increase, by a variety of those who just want to disrupt, steal, embarrass, etc., it's only a matter of time before the computer is turned into an instrument of war. Maybe, someone will try to take down the Iranian nuclear program, oops already tried/done[?].
So don't be surprised, if one morning you wake up, in the dark, cold, your phone doesn't work, your car can't drive you anywhere, because the GPS system is down & it can't drive itself w/o it.
I could go on, but I've got to pack for my next dive trip!!!