The travelers are strongly advised to use only the following official link for applying ETA and to be cautious of other sites that appear legitimate.
Travelers flying to Sri Lanka should be aware of the following unauthorized Electronic Travel Authorization (ETA) websites that scam into paying exorbitant fees:
http://www.srilankavisa.org.lk
http://www.e-visa.lk
http://www.srilankavisa.lk
http://www.go-sri-lanka.com
http://www.srilanka-visaonline.com
http://www.srilankaetavisa.com
http://www.srilanka-etaonline.com
http://www.visa-srilanka.net
http://www.srilankavisa.net
http://www.srilankanetavisa.net
http://www.ivisa.com/visa/sri-lanka
http://www.srilankavisa.org.se
http://www.ivisa.com/sri-lanka-visa
http://www.srilankavisa.org