The city has been a pilgrimage destination for affluent citizens for many years, so security in Puerto de la Cruz is honed to the finest detail. Nevertheless, you should not forget about the norms of behavior, which will help to keep only pleasant impressions of your vacation.
Try not to carry large sums of money and certainly not to show it off when shopping. This is especially true on the city's waterfront, where many street vendors and smugglers congregate in the evenings. Do not put money, valuables and wallet in your pants pockets. A roomy shoulder bag is optimal for the traveler.
It's also not advisable to pay with your card in dubious places, lest it be cloned and your money used. It's worth carrying a few chip cards with relatively small amounts of money on them.
Use the hotel safe to store jewelry and large sums of money (the service is paid - about 2 EUR per day). A small amount of cash will be enough for daily walks.
Do not pay attention to or engage in dialog with street distributors of free lottery tickets who work for local clubs. They're completely harmless, but annoyingly intrusive.