Do you know about the the Fair Credit Billing Act? Put simply, it’s the reason credit card companies are so aggressive about stopping charges and calling you when they suspect something might be wrong. Put simply, it provides strong protections for you against unauthorized charges and places the burden of credit card fraud on the credit card companies.
That’s why it’s not only generally safe to use credit cards for transactions, it’s typically the best option. Just remember that debit cards are NOT covered. Your bank might voluntarily extend many of the protections credit cards receive, but they don’t have to.