[calsify] Calendar spam - it is speeding up - security issue / warning

Doug Royer <douglasroyer@gmail.com> Fri, 14 June 2019 01:13 UTC

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From: Doug Royer <douglasroyer@gmail.com>
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Subject: [calsify] Calendar spam - it is speeding up - security issue / warning
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Years ago, I predicted without more controls (no clue what), that 
calendaring can be used to attempt to schedule appointments and spam.

No proposal from me. Perhaps after reading the article below, new 
security controls may be needed soon. It might make a new great topic / 
draft. Clearly - do not click on appointments in email to find out what 
they are about.

This article is pointing out the latest calendaring security abuse. (it 
is a bit of pay-to-view, you can still read it).

Summary, spammers are sending out calendar appointments with URLs that 
look like appointments (and are fake links or malicious links), or have 
valid iCalendar objects that have or link to malicious calendar 
attachments. The MUA/CUA or perhaps user is being careless about what is 
loaded.

The original post that led me to this article pointed out that 
Thunderbird with the calendar add-on, may be vulnerable to this.

Not entirely new or new news. But it seems to be picking up.

 
https://www.forbes.com/sites/daveywinder/2019/06/11/new-security-warning-issued-for-googles-1-5-billion-gmail-and-calendar-users/#700c55f7565e

No proposal from me. Just for those on this list, if you happen to have 
an idea for helping slow or stop this kind of thing, it may be time to 
rethink iTIP and calendar security.

-- 

Doug Royer - (http://DougRoyer.US)
Douglas.Royer@gmail.com
714-989-6135