Jens Steube, a co-author of the popular Hashcat password cracker, has discovered a weakness in the SHA1 cryptographic hashing technique that enables him to accelerate password cracking by about 20 per cent. SHA1 always processes blocks of 512 bits (64 bytes). However, this data is expanded to 2,048 bits when the SHA1 hash value is generated – Steube calls this process "word expansion". Words are e
At the DerbyCon 2.0 conference, security experts Laszlo Toth and Ferenc Spala presented a range of attacks, some of which were previously unknown, on Oracle databases and SQL servers; they even released suitable tools to exploit them at the same time. In "Hacking the Oracle Client", Laszlo Toth demonstrated that, although Oracle saves the user name and password for a database connection in encrypt
Researchers have discovered that, where data sent over an encrypted HTTPS connection has undergone prior compression, the door is opened to attackers who, by modifying the data traffic in a targeted manner, are then able to crack the encryption. Compression is supported by almost half of all web servers, including the servers at many prominent organisations such as Google and Twitter. Browser make
The new version of Burp Proxy is designed to improve the analysis of encrypted SSL connections on Android phones. Developers and security researchers like to use Burp Proxy to examine the web traffic on PCs, and lately also on smartphones. For example, The H's associates at heise Security recently used Burp to analyse the activities of various smartphone apps for c't magazine. To analyse web traff
Development of Sebastian Pöplau's Ghost USB Honeypot, originally developed at the University of Bonn, will now be taken up by the Honeynet Project. The software emulates a USB flash drive inserted into a USB port on a Windows system, and functions as malware bait. If a system is infected with a worm such as Conficker, Stuxnet or Flame, the worm will copy itself to the fake flash drive. It will the
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