My AVG says LMS-7.9.3 update infected with URL:Blacklist

Just recently my AVG has given the following alert at the same time each day (on Monday 24th, Tuesday 25th and Wednesday 26th August).




I wasn’t consciously doing anything to cause it – I assume it’s associated with LMS attempting an auto-update. Is this a problem with my AVG or a genuine problem with the LMS download?

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