Christian Heilmann

Posts Tagged ‘security’

TTMMHTM: Guardian getting enabled by design,interview,open hack day,bash magic,and XSS filters

Wednesday, March 18th, 2009

Things that made me happy this morning:

Free PHP security talk on 3rd of March in London

Tuesday, February 24th, 2009

Following my talk on web application security at the Web Directions North I had a lot of questions on PHP security and I have to admit I am OK but not an expert on the matter. Luckily enough there are experts I rely on and if you are in London next Tuesday you can go and see them give a talk for free!

In the second in the series of “YDN Tuesday” monthly events, Jose Palazon, Yahoo’s mobile security expert, will be talking about PHP Security.

The venue is Skills Matter Limited at 1 Sekforde Street, EC1R 0BE
London, England.

Jose will be presenting a series of demos on how to exploit and prevent the most popular security flaws in web applications, such as SQL and blind SQL Injections, Cross Site Scripting, file uploads, file handling functions, global variables and, favorite of them all, programmers ingenuity!

YDN Tuesdays are tech talks held on the first Tuesday of every month at Skills Matter’s London offices. The events are FREE, but you need to sign up for them at Skills Matter’s website.

TTMMHTM: Geek chic, development quotes, passwords, Flickr scalability and the New York Times Open

Monday, February 23rd, 2009

Don’t click this – a clickjacking experiment currently hammering twitter

Thursday, February 12th, 2009

Reverse psychology is an interesting thing. Currently Twitter is being hammered by thousands of people twittering about a page that has a button that tells them not to click it. Why do they do it? Because they are told not to. How come they are twittering about it? A small thing called clickjacking.

Scott Schiller shows in a screenshot how the trick works:

The page with the don’t click button actually has an iframe over the button that loads your twitter.com/home page with the predefined tweet about going to the site. The iframe also positions your update button to cover the “don’t click this” button and has an opacity of 0 so you do submit your tweet without knowing it.

The scam works. If you currently check twitter search for “don’t click” then you’ll have an amazing amount of fresh tweets every few seconds. There’s also a French version in the wild

So if you get the tweet, don’t follow the page. If you see a button to click, be very wary of what is going on there!

Things that go bump on the web – my talk at Web Directions North 2008

Thursday, February 5th, 2009

I just finished my talk at Web Directions North in Denver, Colorado about web application security:

[slideshare id=990546&doc=990546]

There’ll also be a video of the talk available in due time :)