Cyberstalking is not a charge that typically triggers the kind of inmate retribution that certain other offenses do. The categories that get someone targeted inside, particularly sex crimes against children, are specific and well-known. A cyberstalking conviction without any child victim element does not fall into those categories and is unlikely to make you a target on that basis alone.
That said, the single most important piece of advice for any federal inmate, regardless of their charge, is this: do not discuss your case. With anyone. Ever.
Inmates talk. Information moves through a facility faster than most people expect, and once something is out there, you cannot take it back. The paperwork question is important here. Your sentencing documents, your PSR, your judgment and commitment order, all of that contains details about your offense that are nobody else's business. Keep those documents secured and out of sight. Do not volunteer information about what you are in for to people you have just met, and be very cautious about what you share even with people you have come to trust over time.
When the inevitable question comes up, because it will, have a short and vague answer ready. Something like a computer crime or a federal charge related to harassment. Keep it at the surface level. The less detail you provide, the less there is to be distorted or misrepresented as information circulates.
The inmates who have the hardest time inside are often not the ones with the worst charges but the ones who talked too much too soon. Discretion is a survival skill. Practice it from day one.