If you try to flash Tizen OS (any version) on a new Ubuntu or Debian installation, you will notice lthor no longer plays nice with the Linux kernel, and it will fail without any messages. It has something to do with this .

The problem is /dev/ttyACM0 is no longer detected, if you do a ls /dev/tty*, ttyACM0 is not there even if the device is connected.

All Windows versions before Windows 10 are vulnerable to the WannaCry (WannaCrypt, WannaCry, WanaCrypt0r, WCrypt or WCRY) ransomware if not patched for MS-17-010 .

The ransom is between $300 to $600, there is code to delete files in the virus so it’s not just a threat.

Below are some useful Linux commands for penetration testing , target reconnaissance and capability assessment. Use them for good, not for evil.

traceroute:

$ traceroute <target>

$ traceroute google.com
traceroute to google.com (213.157.177.157), 24 hops max, 52 byte packets
 1  192-168-1-110.x.com (192.168.1.110)  9.403 ms  7.301 ms  3.264 ms
 2  10.10.10.10 (10.10.10.10)  47.823 ms  3.649 ms  2.436 ms
 	... etc ...

SQL injection is a code injection technique, used to attack data-driven applications, in which nefarious SQL statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker). SQL injection must exploit a security vulnerability in an application’s software, for example, when user input is either incorrectly filtered for string literal escape characters embedded in SQL statements or user input is not strongly typed and unexpectedly executed. Wikipedia

Javascript is a fun language that allows you to write crazy AND valid code.

Keep in mind that adding [] converts the expression to a String, for example: