I'd just say "tapping" for the two phrases. My suggestion.

So far none of the answers address your question: “I am wondering if the above simply means telephone tappings/intercepts. ... is intercepts a synonym for the term?”

Yes, it is. Ther synonyms are wirtetapping, tapping, bugging. The term eavesdropping could be a form of an intercept, but it could also be used in the generic sense when a person eavesdrops on someone without the use of tapping, e.g., next to another’s table at a restaurant.

Another thing of note is that in Spanish the correct term is intervención instead of interceptación because if it is “intercepted” it does not continue on its path. However, to intercept and interceptar are both used colloquially to mean the same thing.