#2 spammers are attaching random lines

closed
nobody
None
5
2002-09-18
2002-04-05
No

Spammers are attaching lines of random letters to their
mail to avoid being caught by the razor hash. Some
countermeasure is needed now unfortunately. Maybe trim
lines that don't look like text? Or only hash on some
percentage of the lines, say 90%? Dunno. Sigh, it's a
never ending war.

Discussion

  • Nobody/Anonymous

    Logged In: NO

    Razor v2 supports this, via what the author calls "Ephemeral
    hashes", whereby a certain portion of the message is
    checked.

     
  • Vipul Ved Prakash

    Logged In: YES
    user_id=22038

    Razor2 already does a lot of preprocessing and it's hashing
    schemes are designed to gloss over mutations in text. More
    fuzzy mechanisms are planned for future.

    best,
    vipul.

     
  • Vipul Ved Prakash

    • status: open --> closed
     

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