Passwords act as a first line of defense against any malicious or unauthorized access to one's personal information. With the increasing digitization, it has now become even more important to choose strong passwords. In this paper, the authors analyze a 100 million Email-Password Database to perform Exploratory Data Analysis. The analysis provides valuable insights on statistics about the most common passwords being used, character set of passwords, most common domains, average length, password strength, frequencies of letters, numbers, symbols (special characters), most common letter, most common number, most common symbol, the ratio of letters, numbers, symbols in passwords which highlights the general trend that users follow while creating passwords. Using the results of this paper, users can make intelligent decisions while creating passwords for themselves, i.e., not opting for the most common features that will help them create robust and less vulnerable passwords.

Digital Image Forensics aims at uncovering and analyzing the underlying facts about the image. Its main objectives compromises: tampering detection (cloning, healing, retouching, splicing), hidden data detection and recovery, source identification with no prior measurement or registration of the image. In this paper, application of Benford' law in Digital Image Forensics has been analyzed. JPEG and JPEG2000 approximately follow this law and JPEG2000 found closer to the given law. The non-following of this law in different forensics setups can be used as fingerprint. Further, amount of deviation from Benford' law in compressed images can be used to find forgery. Simulations results are given to establish the theory.

In this paper, the authors analyse RFID technology, different types of Tags, Readers and various protocols associated with RFID. We read, write and dump the raw bytes from the MIFARE Classic Card using RC5220 and Arduino Mega. Delhi Metro Card uses MIFARE DESFire. MIFARE DESFire uses 3(DES) for encryption. In this paper, we also read the data structure of the Delhi Metro Card. Additionally, we also compare MIFARE Classic Card and MIFARE DESFire Card.

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