'Merseyside police are investigating and the Club will focus its efforts on supporting Andre and his family.
The club tweeted on Monday night: 'Get well soon, Wis'. It was totally unprovoked.
Wisdom signed for Liverpool as a youngster and worked his way through the club's youth system.
The defender is now recovering in hospital, with Derby confirming that Wisdom sustained injuries during the attack.
Wisdom joined Liverpool as a teenager, making his first-team debut under Kenny Dalglish in the 2012/13 season, before loan spells at Derby, West Brom, Norwich and Red Bull Salzburg. They are just three points off the play-off places at present.
Mulan Release Date Pushed Back to August
Tenet was moved from July 17 - just before Mulan's previous release date - to two weeks later on August 12. Roughly 780 indoor theaters now are open in the United States, according to research firm Comscore.
First Taste of Apple on Arm: macOS Benchmarks Arrive, Sans x86
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European Union to let visitors in for 'safe' countries
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