There is no word in English that cannot begin or end a sentence. A direct object like them is an unusual opening in Standard English, but not wrong. English word order is flexible for effect, and there is a big, though subtle, difference between "I don't like them" and "Them I don't like."
can you start a sentence using the word phishing?
no!
No, you cannot start a sentence with "no" unless you need to do so. No reason exists not to start a sentence with that word, as you can see. No one will care if you do start a sentence with it.
What sentence would you like?
When it is at the start of a sentence.
start it out with the
Of course you can. There is no word in English that cannot begin a sentence.
The first word of a sentence must start with a capital letter. There are millions of ways to start a sentence!
No, you cannot.
sometimes
Yes
Yes, you can.