The five interlocking Olympic rings are black, blue, red, green, and yellow because at least one of these colors appears on every national flag. .. More >>
Precaution while using WiFi
Avoid accessing websites
Avoid accessing websites or services where you provide personal or private information since hackers could be monitoring your activities. We dont advise accessing secure websites from public hotspots, such as online banking sites, portfolio management sites, or other sites containing personal data. Email access can also be at risk.