Thanks Danny,
I forwarded your suspicions to our IT liaison. She determined that it is indeed internal security testing. Apparently it has been running for several years, but in all that time I'd never seen this showing up in the login log. Something about it is not systematically probing every course, so maybe it just never hit one where I had occasion to look at the log.
Anyway, thanks for the tip.
Alex
I forwarded your suspicions to our IT liaison. She determined that it is indeed internal security testing. Apparently it has been running for several years, but in all that time I'd never seen this showing up in the login log. Something about it is not systematically probing every course, so maybe it just never hit one where I had occasion to look at the log.
Anyway, thanks for the tip.
Alex