Twitter’s 140 character limit has been hacked. Twitter customers were
stunned when they saw that people have managed to write over nine
hundred characters in a tweet when they know that the maximum limit is
140.
Stack Exchange has posted that this strange message
contained backlashes and a bunch of numbers. The message was posted in
Russian. It contained Unicode surrogate points that were not properly
encoded as UTF-8. The CESU -8 encoding utilized in the tweet is accepted
by some Twitter interfaces but for display purposes as the social
network expects valid UTF-8 sequences. Each surrogate code point ends up
being displayed with twelve characters since three bytes on each of
these sequences are displayed as 3 C style octal escape sequences of 4
characters each.
Some technicians feel that it is possible since each
group of characters that begins with a backlash represents an escape
sequence which is considered as a valid character constant. Some of the
escape sequences available are control characters. These characters tell
the computer to move the cursor to move left or right or delete the
characters to the left maybe. They can be used quite effectively to
confuse Twitter.
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