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Re:Exploit broker Zerodium ups the ante with $500k to target... by Abishek_Muthian on Wednesday August 23, 2017 @11:10PM (#15087338)
Not just Signal & WhatsApp,

$500,000 - Messaging Apps RCE + LPE (SMS/MMS, iMessage, Telegram, WhatsApp, Signal, Facebook, Viber, WeChat) .

Which I guess chat apps with > 250M MAU (except Telegram, which probably is because of it's high usage rate in Arab countries). Looking at their programme, they might probably approach the original vendor; but we all know who would pay hard cash for 0 days ;)

Original Source : https://zerodium.com/program.html

Re:Exploit broker Zerodium ups the ante with $500k to target... by jorvi on Thursday August 24, 2017 @06:30AM (#15088933)
Strange that they would pay the same money for an iMessage or Viber exploit. Those have very little market penetration compared to WhatsApp it's 90%+ (!)
Re:Exploit broker Zerodium ups the ante with $500k to target... by secfirstmd on Thursday August 24, 2017 @07:44AM (#15089250)
It's the countries that they are big in that probably make them think this way.

For example, Viber is very popular in the Middle East, Russia, Africa, India, parts of Asia, Ukraine, Balkans, some of the 'Stans.