More About Safer Sex
The term safer sex, along with the term "protected sex," has become preferred over the previously used "safe sex" because, even with protective measures, it is still possible to transmit STIs making no sex truly "safe."
It should be noted that some STIs can be transmitted during non-penetrative sexual acts even when a condom is in place due to the areas of skin that condoms leave exposed. These STIs include herpes and HPV.