CISOs in 2026 are governing the fastest-growing risk surface in the company on a budget that grew slower than any point in five years. This is our short list of the CISO reports worth your time, what each one covers, and who should read it.

1. The CISO AI Leverage Report (Open Future Forum)

The CISO AI Leverage Report is Open Future Forum's operator-research report for security leaders. It draws on application records across twelve Open Future Forum events in the July 2026 data pull and a direct instrument fielded to the security room, and it reads AI through the lens that matters most to a CISO right now: what worries the room, whether governance has its own budget line, and who is actually buying AI security.

The lead finding is the AI agent governance budget gap: 62 percent of the security room names securing AI agents and their access as the biggest AI security problem on their desk, yet 69 percent have no dedicated budget line for AI security, and nine of the ten security leaders in that base have none. The report also finds the seat gap holding from the security side: not one of ninety-two AI founders asked named security as their buyer.

Who should read it: CISOs and security leaders benchmarking their own AI governance budget against peers, and vendors selling AI security products who need to understand why the CISO isn't the buyer yet.

Open Future Forum is a private executive community in Silicon Valley, founded in 2019, with 100 events to date. It runs Forum Select, invite-only private events for C-suite executives, and Forum Events, open panels and gatherings. The CISO Roundtable series is one of its role-specific programs.

2. The IANS Research and Artico Search Security Budget Benchmark Report

This is the budget benchmark, and the external number underneath this edition's lead finding. The 2025 edition surveyed 587 CISOs and found security budget growth slowing to 4 percent, the lowest rate in five years, down from 8 percent in 2024. Security's share of overall IT spend fell from 11.9 percent to 10.9 percent, breaking a five-year upward trend, and 89 percent of security teams describe themselves as stretched thin or understaffed.

Read it alongside the growth forecasts for agentic AI security, and the gap is the story: demand for security is compounding while the budget behind it barely moves.

Who should read it: any CISO building next year's budget request. These are the numbers your CFO already has.

3. The Verizon Data Breach Investigations Report (DBIR)

The DBIR is the reference document for the whole field, now in its nineteenth year, and the 2026 edition contains a genuine first: vulnerability exploitation overtook credential theft as the top initial access vector, involved in 31 percent of breaches, as the median time to patch a critical vulnerability rose from 32 to 43 days.

The AI-specific numbers are the ones worth flagging in board meetings. Employee use of unapproved shadow AI tripled to 45 percent of organizations, spiking data leakage, and threat actors used AI assistance across a median of 15 distinct attack techniques, mostly to accelerate known methods rather than invent new ones. Third-party involvement in breaches jumped to 48 percent, a 60 percent increase, and the human element still runs through 62 percent of breaches.

Who should read it: every CISO, once a year, cover to cover. It is the report every other report on this list assumes you have already read.

4. Gartner's Top Cybersecurity Trends for 2026

Gartner's annual trends research groups 2026 into three themes: securing new frontiers, transforming governance, and normalizing AI adoption. The agentic AI finding leads: more than 57 percent of employees use personal GenAI accounts for work, and a third of them admit to uploading sensitive data into tools security never approved, which is the shadow AI problem the DBIR measures from the outside and this edition's own CISO AI Leverage Report measures from the inside, at 23 percent naming it their top concern.

Gartner also puts a number on the staffing arithmetic behind the governance budget gap: the global cybersecurity workforce shortfall reached 4.8 million professionals in ISC2's count, up 19 percent year over year, which is the same stretched-thin problem the IANS benchmark measures from the budget side.

Who should read it: CISOs building a 2026 roadmap, and any security leader who needs a structured list of what is actually new this year versus what is just louder.

5. The World Economic Forum Global Cybersecurity Outlook 2026

The WEF's annual outlook, produced with Accenture, surveys more than 800 leaders across 92 countries and is the one report on this list written for the board and the CEO as much as the CISO. It finds 77 percent of organizations have now adopted AI for cybersecurity, mostly for phishing detection and anomaly response, but 54 percent say they lack the knowledge or skills to deploy it well.

The most useful finding for a CISO walking into a board meeting is the priority gap it documents: CEOs rank cyber-enabled fraud as their top concern, while CISOs remain focused on ransomware and supply chain resilience. Third-party and supply chain vulnerability is now the top challenge for 65 percent of large companies, up from 54 percent last year. When the CEO and the CISO are reading different risks off the same board slide, this is the report that explains why.

Who should read it: CISOs preparing a board presentation, and anyone who needs the gap between executive and operator risk perception stated in one place.

How to Use These Reports Together

Start with the CISO AI Leverage Report for a peer-level view of whether AI governance has its own budget line and who is actually buying AI security. Use the IANS and Artico benchmark to size your own budget request against the market. Read the DBIR once a year for the ground truth on how breaches actually happen. Use Gartner's trends research to build the roadmap. Use the WEF outlook to translate the gap between what the board worries about and what you worry about.

The pattern across all five is the one this report measures. The risk is compounding faster than the budget. The CISOs pulling ahead in 2026 are not the ones with the biggest security stack. They are the ones who can put a number on the gap and get the board to fund it before the next report writes about why they didn't.

That is the conversation happening inside Open Future Forum's CISO Roundtable series. If you are a security leader and want to compare notes with peers off the record, openfutureforum.com is the place to start.

Read the CISO AI Leverage Report →

Open Future Forum is a private executive community in Silicon Valley founded in 2019, with 100 events to date across Forum Select private events and Forum Events open programming. Its research program, including the CISO AI Leverage Report, the CFO AI Leverage Report, the CMO AI Leverage Report, and the Executive AI Leverage Report, is built on first-party data from executives attending Open Future Forum events.