my website gets affected by trojan virus... can anyone tell me why its happened?

[prabunewindia]

Hello everyone!,

I developed a website page with IFrame. It was working fine. When a new modification came, I done some modification on the page called in iframe. before it was done in .Net 2003. I just added new validation controls. And nothing done in code.(it was builded and kept as dll)
And i added one more iframe which is calling a page done in .Net 2005.
Once I uploaded the new modified site, its got trojan virus and iframes where deleted from the page. Now i made a new page for the old page, which is done in .Net 2003 and uploaded. now no virus.
But now i am very much confused, why this virus came? Can any please tell me, if u know..

regards,
Rajendra Prabu

[kenobewan]

This is a big security issue. If you are using your own PC, this is a common occurence. A simple solution if this is the case, is let a hosting company worry about this sort of thing and pay the experts.

Ports, firewalls and least privilege are just three areas you need to consider. Security is a big topic. If it is application security that you are concerned about once secure hosting, here is a good read:
Building Secure ASP.NET Applications: Authentication, Authorization, and Secure Communication

Run the task manager/usage/logs on your server and make sure that you haven't become part of botfarm, someone else controls your computer and uses it in ways that you didn't intend; and they use your bandwidth.

[prabunewindia]

Thanks for the reply. Let me go to the hosting people and let you know once it is get OK.

thank you!

This is a big security issue. If you are using your own PC, this is a common occurence. A simple solution if this is the case, is let a hosting company worry about this sort of thing and pay the experts.

Ports, firewalls and least privilege are just three areas you need to consider. Security is a big topic. If it is application security that you are concerned about once secure hosting, here is a good read:
Building Secure ASP.NET Applications: Authentication, Authorization, and Secure Communication

Run the task manager/usage/logs on your server and make sure that you haven't become part of botfarm, someone else controls your computer and uses it in ways that you didn't intend; and they use your bandwidth.

[prabunewindia]

hi kenobewan,

The problem solved. My system was having more malwares in it. when i used FTP those malwares got into my server. Now we cleared those using spy doctor.

Thank you for your efforts!!!

This is a big security issue. If you are using your own PC, this is a common occurence. A simple solution if this is the case, is let a hosting company worry about this sort of thing and pay the experts.

Ports, firewalls and least privilege are just three areas you need to consider. Security is a big topic. If it is application security that you are concerned about once secure hosting, here is a good read:
Building Secure ASP.NET Applications: Authentication, Authorization, and Secure Communication

Run the task manager/usage/logs on your server and make sure that you haven't become part of botfarm, someone else controls your computer and uses it in ways that you didn't intend; and they use your bandwidth.