P
Phosphorus
Eliminates the IoT security gap with the only remediation platform that finds every Thing, fixes every Thing and brings every Thing into compliance
About Phosphorus
Phosphorus.io is a cybersecurity startup focused on securing Internet of Things (IoT) devices. The company addresses the vulnerabilities inherent in IoT devices, which are often exploited by hackers due to unpatched firmware, default credentials, and backdoors. Phosphorus.io serves a diverse range of clients, including large retailers, media companies, manufacturing plants, healthcare facilities, and data centers. These clients are particularly vulnerable due to the sheer number of IoT devices they use, which can create significant security challenges.
The market Phosphorus.io operates in is the rapidly growing IoT security sector. With the global worth of IoT technology projected to reach $6.2 trillion by 2025, the need for robust security solutions is more critical than ever. The company’s primary product is designed to provide a reliable and easy-to-use solution for Chief Security Officers (CSOs) to combat IoT breaches. This includes features like one-button IoT device synchronization, which simplifies the process of securing a large number of devices.
Phosphorus.io’s business model revolves around providing subscription-based security services to its clients. They make money by offering these services on a recurring basis, ensuring continuous protection and updates against new threats. The company is currently deploying its solutions with a $60 billion global retailer and a $40 billion media company, highlighting its capability to handle large-scale operations.
In summary, Phosphorus.io is a key player in the IoT security market, offering essential services to industries that rely heavily on IoT devices. Their solutions help mitigate the risks associated with IoT vulnerabilities, ensuring the safety and integrity of business operations.
Source: Dealroom company dataAt a glance
- Status
- Acquired
- Founded
- 2017
- Headquarters
- Nashville, United States
- Employees
- 70
- Open positions
- None listed
- Dealroom signal
- 80.2/100
- Industry
- Security
- Sub-industry
- Device security & Antivirus
- Sector
- Cybersecurity, Woman Founder
- Technology
- IoT InternetOfThings
- Business model
- SaaS
- Client focus
- b2b
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| ACQUISITIONOther financing | Jun 2026 | $0 | — | Dragos | ↗ |
| EARLY VCOther financing | Apr 2025 | $0 | — | NEVA SGR | ↗ |
Financials
Revenue, earnings and other financial measures where available. Years marked “E” are estimates.
Growth signals
Latest recorded traffic for Phosphorus is 11K monthly website visits, down 15.4% over the last three months. Phosphorus's team grew 16.7% over the past year.
Similar companies
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series A4 investors entered at this stage
MassMutual Ventures
SYN Ventures
Evolution Equity Partners
NEVA SGR
Other known investors1 additional known investor
Dragos
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Phosphorus on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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