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A senior member of the Fusion team will review your request and follow up within 1 business day. If it’s urgent, you’ll hear back faster.
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Need immediate help? Call (416) 566-2845
Got it — Mike will reply directly
You asked a quick question. Mike Pearlstein, CISSP reads every inbound himself and writes back within one business day — most under 4 hours.
If you want to skip the back-and-forth, book a 30-minute discovery call:
While you wait, three of our most-read pieces:
Real Fusion case studiesWhat managed IT actually coversAbout Mike Pearlstein, CISSP
Discovery call request received
Here’s what happens next:
- Mike reaches out (within 1 business day) with 3 calendar options.
- 30-min discovery call. We walk your current stack, response patterns, and risk posture.
- Written summary. Within 5 business days you get a no-pressure scope memo — including a cost-of-doing-nothing estimate.
Two pieces clients tell us cut through during evaluation:
The Friday-night ransomware recovery35 to 205 users without a hiring spree
Stay on the call — Mike is paged
Active incident? Stay on the phone. Mike Pearlstein, CISSP is being paged.
Call now: (416) 566-2845
After hours / weekends, this number routes to the on-call CISSP-led IR team. Do not type evidence into public forms.
While you wait for the callback:
- Isolate the affected device(s) from the network — do not power off (forensics matter).
- Pull a copy of the most recent backup off-site.
- Stop talking to attackers without legal counsel.
- Notify your cyber-insurance carrier within their reporting window.

