Answer:
"So-called anonymous tracking is not very secure—the anonymity is fairly easily broken. Cracking [it]...is a fairly easy engineering feat."
Step-by-step explanation:
The correct way of omitting parts of the sentence of the quote but also maintain its meaning through addition is "So-called anonymous tracking is not very secure—the anonymity is fairly easily broken. Cracking [it]...is a fairly easy engineering feat."
This is because, some words were omitted and the word "It" was added to make it clearer and easily understood.