Hello, Ritesh,,, may you live as long the rivers flow and moon and Sun lighten up the sky,
as your birthday, I could like to tell you about small Computer VIRUS,
There was once a boy in early 1990s, on his birthday one whished him, so he made a VIRUS, which could affect , the boot sector of the computer,,,, It could hang the computer untill unless user typed , HAPPY BIRTH DAY JOSHI,,,
Virus is called by Name, Happy Birth Day Joshi,