Those other PDF readers are WAY more insecure.
Get a grip....
Miscreants have reportedly discovered a zero-day vulnerability in latest version of Adobe Reader. Exploits based on the vulnerability, which circumvents sandbox protection technology incorporated into Adobe X and Adobe XI, are on sale in underground forums. Pricing starts at a hefty $30,000 but the exploit has already made its …
The original document format was probably ok: supported TrueType & PostScript embedded fonts, vector graphics, bitmaps, not much else. But over time Adobe has taken it towards being some all-purpose document handling and presentation system, so now it has some custom sub-pixel rendering (eBook support - source of at least one zero-day buffer overrun), Javascript, and worst of all Flash, itself a ripe field for exploits.
Third party readers that limit their ambitions to showing text & graphics have a rather smaller attack surface.
This post has been deleted by its author