Yes, it is secure to use your card globally.
The following charges apply:
Mark up fee - 3.5% + Goods and Services Tax (GST)
Exception:
A refund initiated by the customer on similar Foreign Currency transactions will also attract a 3.5% Mark-up fee.
ATM Cash Withdrawal Fee overseas – Rs. 125 + GST
Balance Enquiry overseas – Rs. 25 + GST
Always make your international payments in local currency of country of travel to avoid excessive surcharge.
If a transaction is done in a currency other than Indian Rupees, that transaction will be converted into Indian Rupees. The conversion will take place on the date the transaction is settled with ICICI Bank, which may not be the same date on which the transaction was done. If the transaction is not in US Dollars, the conversion will be made through US Dollars, by converting the charged amount into US Dollars and then by converting the US Dollar amount into Indian Rupees.
Unless a specific rate is required by applicable law, the conversion rate from US Dollar to Indian Rupees will be at the rates provided by Visa, Mastercard or Amex, as the case may be, on the settlement date, increased by a Currency Conversion Factor assessment (currently 3.50%) on such transactions.