Re: [trojita] User Agent Info Leak

2015-03-03 Thread Thomas Lübking
On Dienstag, 3. März 2015 13:10:43 CET, Jan Kundrát wrote: What do others think, should we make this user-configurable? While the OP is largely exaggerating on the topic, this might be a valuable feature for some very exposed people, who're likely subject to specialized attacks (we're not ta

Re: [trojita] User Agent Info Leak

2015-03-03 Thread Jason A. Donenfeld
It's not security by obscurity. It's a first step in combating fingerprinting, and removing an info leak. CWE-200

Re: [trojita] User Agent Info Leak

2015-03-03 Thread Stephan Platz
Hi, On 03/03/2015 01:41 PM, Jason A. Donenfeld wrote: > I want absolutely nothing in there. Basically that's security by obscurity. Which is bad practice in my opinion. Keeping your system up-to-date is the better alternative here. An attacker could either identify your client by other means or

Re: [trojita] User Agent Info Leak

2015-03-03 Thread Jason A. Donenfeld
On Tue, Mar 3, 2015 at 1:40 PM, Jan Kundrát wrote: > > Now, maybe we could change the pref to switch between "identify Trojita > including the Qt version" and "just say it's Trojita". Am I right that this > won't be a correct fix from your point of view, and that you absolutely > want to have noth

Re: [trojita] User Agent Info Leak

2015-03-03 Thread Jan Kundrát
On Tuesday, 3 March 2015 13:24:52 CEST, Jason A. Donenfeld wrote: It also comes in handy for forming targeted attacks against MUAs with zero-day vulnerabilities known to particular adversaries. As a security professional, this additional level of obscurity - of not leaking my UA - is important, a

[trojita] Re: User Agent Info Leak

2015-03-03 Thread Jason A. Donenfeld
On Tue, Mar 3, 2015 at 1:10 PM, Jan Kundrát wrote: > > I'm not saying "nope", but I wonder why you're asking for this. The > User-Agent comes handy when troubleshooting various interoperability issues; It also comes in handy for forming targeted attacks against MUAs with zero-day vulnerabilities

[trojita] Re: User Agent Info Leak

2015-03-03 Thread Jan Kundrát
On Monday, 2 March 2015 23:49:40 CEST, Jason A. Donenfeld wrote: My emails sent from Trojita have in them a user agent. When I check the box "don't identify Trojita to others", I'd like for the User-Agent header to be suppressed all together. Is this possible? Hi Jason, I'm not saying "nope", b