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Gartner, A Journey Guide to Postquantum Readiness, Sarah Almond, Mark Horvath, 13 March 2026, ID G00843746. GARTNER is a registered trademark and service mark of Gartner, Inc. and/or its affiliates in the U.S. and internationally and is used herein with permission. All rights reserved. Gartner does not endorse any vendor, product or service depicted in its research publications and does not advise technology users to select only those vendors with the highest ratings or other designation. Gartner research publications consist of the opinions of Gartner's research organization and should not be construed as statements of fact. Gartner disclaims all warranties, expressed or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose.
The deadline math nobody likes to do
Here's the part that doesn't make headlines. An attacker doesn't need a working quantum computer to hurt you today. They need a copy of your encrypted data and the patience to wait for the hardware. Capture it now, store it, decrypt it later. The data most at risk is the data you encrypted years ago and stopped thinking about.
NIST finalized the first three postquantum standards in August 2024. The migration runs for years. So the question isn't whether you have time. It's whether you know where to start.
A map worth having before you spend a dollar
Gartner's A Journey Guide to Postquantum Readiness, by Sarah Almond and Mark Horvath, is a practical roadmap for postquantum readiness, from understanding the threat through scaling the response across an organization. If you own a postquantum program, or you're about to, it's the analyst's-eye view of what's ahead.
Start where the risk is, not where the project is
Most postquantum programs stall for the same reason. They read as a five-year cost with nothing to show this quarter. It doesn't have to go that way.
Find it
Where sensitive data and aging encryption actually live, across endpoint, cloud, and mainframe.
Rank it
The long-lived data and buried uses that are the real harvest-now, decrypt-later targets.
Protect it
The top of that list, now, with evidence you can take to the board this quarter.
That's the work PKWARE does, and it's the difference between a line item that gets cut and a win that gets funded.