Fundraising Fox

Parakeet Security

Entrepreneur First '25

London, GB · Founded 2025 · 3 known investors

Parakeet Security provides security solutions for voice AI agents, helping frontier labs and enterprises protect against emerging risks in voice AI systems.

Also known as Parakeet

Founders & leadership

Parakeet Security was founded in 2025 by Sima Reichenbach and Nick Braiman.

SRSima Reichenbach
Sima ReichenbachinceoSima holds a PhD from Cornell University in audio AI and is a named patent holder. She has led HSBC's AI financial crime team, where costs fell by 80%, and Deliveroo's AI advertising platform, where ad revenue rose 22% after the company's IPO.
NBNick Braiman
Nick BraimaninctoNick also completed a PhD at Cornell University focused on audio AI, and holds patents covering audio brain-computer interface algorithms. He previously led development of AI fraud detection systems applied to a $300M insurance portfolio.

Investors · 3

Company profile

researched Aug 2026

Parakeet Security is a security company focused on voice AI. According to its website, it works with frontier AI labs and enterprises to secure voice AI agents against emerging risks, and states that it is backed by leading investors and Silicon Valley technology entrepreneurs [0].

The company presents itself at an early stage of team building, with an open call for applicants across a range of roles and a contact form that accepts resumes [0][1]. It is listed in the Entrepreneur First portfolio directory, the talent-investor programme that supports individuals in building technology companies from London and other hubs [2][3].

Founding story

The website states that the founding team includes audio AI researchers from the Alexa and Amazon Nova teams, as well as people from Cornell, Columbia, and Oxford [0]. Sima Reichenbach is listed as a Founder-in-Residence at Entrepreneur First [3].

Traction

No customer counts, revenue, or usage figures are disclosed in the available sources. The website states the company works with frontier labs and enterprises and is backed by investors, without naming them [0].

Latest developments

The company is recruiting across a range of roles and invites direct contact from applicants [0][1].

Full profile — market position, technology, go-to-market, geography, risks & controversies

Market position

The company is positioned in the voice AI security segment and is an Entrepreneur First portfolio company; no market share, ranking, or comparative data is available in the sources [0][2].

Technology

Public materials describe the focus as securing voice AI agents against emerging risks, but do not detail the underlying technical approach, architecture, or products [0].

Go-to-market

The website identifies frontier AI labs and enterprises deploying voice AI agents as the customers the company works with [0].

Geography

Entrepreneur First lists the company within its portfolio directory, whose London-based organisation is headquartered in London, United Kingdom [2][3]. No other office locations are stated in the sources.

Risks & controversies

No risks or controversies are reported in the available sources. Note that several unrelated organisations share the 'Parakeet' name, including Parakeet Technologies, a smart building IoT provider acquired by Brivo in 2020, which is a different company [4].

Compiled by commissioned research from 5 cited public sources — announcements, filings, and press listed under research sources below.

Research sources · 5

primary sources listed

5 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Parakeet Security do?
Parakeet Security is a London-based company securing voice AI agents for frontier labs and enterprises.
Who founded Parakeet Security?
Parakeet Security was founded by Sima Reichenbach, Nick Braiman in 2025.
Who are Parakeet Security's investors?
Parakeet Security's investors include Entrepreneur First, Long Journey Ventures, Transpose Platform Management.
Where is Parakeet Security headquartered?
Parakeet Security is headquartered in London, GB.