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    Market report · Oct 2026

    DLP (Data Loss Prevention)

    13 vendors tracked and 351 case studies read: what teams report, who signs off, who is winning switches, and where vendors fall short.

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    Market leaders

    Top DLP (Data Loss Prevention) vendors by known customers

    1. 1.Proofpoint147 known customers
    2. 2.Netskope107 known customers · 100 case studies
    3. 3.Forcepoint71 known customers · 67 case studies
    4. 4.Microsoft65 known customers · 12 case studies
    5. 5.Zscaler61 known customers · 59 case studies
    6. 6.Nightfall AI52 known customers · 28 case studies · 1 documented switch won
    7. 7.Broadcom18 known customers · 8 case studies
    8. 8.Code428 known customers
    9. 9.Cyberhaven5 known customers · 5 case studies

    Ranked by publicly known customers · Airframe, Oct 2026

    Loss reasons

    Why DLP (Data Loss Prevention) vendors lose deals

    • Total price and admin load reject small teams.
    • Complex set up and rule work delay value.
    • False hits flood analysts and erode trust.
    • Heavy load slows hosts and search.
    • Poor help and slow license acts drive churn.

    Loss reasons across the category · Airframe, Oct 2026

    Buyer questions

    What buyers ask DLP (Data Loss Prevention) vendors

    1. How does the tool stop loss on laptops when the user has no net link?
    2. How does the tool tag data by type and by value with no aid from users?
    3. How does the tool guard data in cloud apps and block bad share acts?
    4. How does the tool block mail that holds secret data prior to send?
    5. How does the tool check web flow for secret data and block the post?
    6. How does the tool stop secret prompts in AI tools prior to send?
    7. How does the tool guard USB ports and print paths on end points?
    8. How does the tool find secret data at rest in files and stores?

    Most decisive first, from pre-purchase questions and RFPs · Airframe, Oct 2026

    For buyers

    Buying data loss prevention?

    The market at a glance

    • 13 vendors tracked
    • 351 case studies read
    • 236 buyers mapped

    Airframe, Oct 2026

    Who signs off

    • Cyber Security: 38
    • IT (Corporate Engineering): 37
    • Software Engineering: 11
    • CEO Office: 5

    Of 236 buyers mapped in this market · Airframe, Oct 2026

    Ask what matters

    • How does the tool stop loss on laptops when the user has no net link?
    • How does the tool tag data by type and by value with no aid from users?

    From the market's RFP question bank · Airframe, Oct 2026

    For vendors

    Who's winning your category?

    Who buyers choose

    • Proofpoint: 147
    • Varonis: 114
    • Netskope: 107
    • Forcepoint: 71

    Known customers per vendor · Airframe, Oct 2026

    Find the gaps rivals leave open

    • Data classification engine: 69%
    • User activity view: 69%
    • Threat file block: 31%

    Share of vendors offering each · Airframe, Oct 2026

    Know why deals are lost

    • Total price and admin load reject small teams.
    • Complex set up and rule work delay value.
    • False hits flood analysts and erode trust.

    Loss reasons across the category · Airframe, Oct 2026