Wikipedia's first sentence called it “military intelligence technology unit of israel's military intelligence directorate”. Today it says “secret”. Sections present on October 6, 2023 no longer exist: “History; Operations”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the October 6, 2023 one. Red dashes: removed from Wikipedia since.Pale dots: rewritten; the numbered note shows what it says now.Red text: written in or rewritten since the previous snapshot.1 tap a number or a side note to jump between them
The opening as it read in October 6, 2023
Secret technology unit of the Israeli Defense Forces Military unit Unit 81 ( , "Unit eight - one") is a secret technology unit part of the Special Operations Division of the Military Intelligence Directorate , an independent service of the Israel Defense Forces (IDF). The unit focuses on building and supplying cutting-edge technologies to Israeli combat soldiers and spies. It often related to the Unit 8200 responsible for signal intelligence (SIGINT) and code decryption.1
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1121707688.
The opening as it stood in 2020
Unit 81 ( ) is the military intelligence technology unit of Israel's Military Intelligence Directorate (AMAN). It focuses on supplying the newest technology to Israeli combat soldiers. It is more secretive than the related Unit 8200 .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 832348100.
The opening as it stood in 2025
Secret technology unit of the Israeli Defense Forces Military unit Unit 81 ( Hebrew : יחידה 81 ) is a secret technology unit part of the Special Operations Division of the Military Intelligence Directorate , an independent service of the Israel Defense Forces (IDF). The unit focuses on building and supplying cutting-edge technologies to Israeli combat soldiers and spies. It is often related to Unit 8200 , which is responsible for signal intelligence (SIGINT) and code decryption.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1288347296. This is our newest snapshot; the live article may have moved again since.
Today
Wikipedia's first sentence called it “military intelligence technology unit of israel's military intelligence directorate”. Today it says “secret”. Sections present on October 6, 2023 no longer exist: “History; Operations”. Read the current article and compare.
2020
Oct '23
2025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.
What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2020, and today's defining sentence is their current revision.
Then
military intelligence technology unit of israel's military intelligence directorate
Now
secret
Sections that no longer exist
Present on October 6, 2023, absent today, with no near-matching heading in the current article and the article shorter overall, so this is not a renamed heading or a topic absorbed into a fuller treatment. 2 sections of 400 characters or more gone since October 6 2023, with the article 1,220 characters shorter.
History
Operations
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.
