# Using Physical Layer 1 for Ultimate Data Visibility | Sepio's Yossi Appleboum

- Show: [IoT For All Podcast](https://hardwarepodcasts.com/podcast/iot-for-all-podcast)
- Published: 2022-08-18
- Length: 22m
- Page: https://hardwarepodcasts.com/podcast/iot-for-all-podcast/2022-08-18-using-physical-layer-1-for-ultimate-data-visibility-sepios-yossi-appleboum
- Listen: https://podcasters.spotify.com/pod/show/iot-for-all/episodes/Using-Physical-Layer-1-for-Ultimate-Data-Visibility--Sepios-Yossi-Appleboum-e28bk20

## Summary

Yossi Appleboum, CEO and Co-Founder of Sepio, explains how his company uses physical layer 1 (Layer 1) data to provide visibility into IoT and OT devices for enterprise security. He details how unique hardware fingerprints allow organizations to identify assets regardless of their network activity or encryption status, addressing the common misconception that endpoint security tools provide complete asset visibility. Appleboum advises companies to prioritize understanding their asset inventory before attempting complex mitigation strategies, warning against ignoring basic threats like USB devices in favor of modern security programs.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/iot-for-all-podcast/2022-08-18-using-physical-layer-1-for-ultimate-data-visibility-sepios-yossi-appleboum#t=0) Introduction and Sepio Overview
- [4:50](https://hardwarepodcasts.com/podcast/iot-for-all-podcast/2022-08-18-using-physical-layer-1-for-ultimate-data-visibility-sepios-yossi-appleboum#t=290) Physical Layer 1 Technology Explained
- [7:03](https://hardwarepodcasts.com/podcast/iot-for-all-podcast/2022-08-18-using-physical-layer-1-for-ultimate-data-visibility-sepios-yossi-appleboum#t=423) Value of Layer 1 Data for Visibility
- [11:22](https://hardwarepodcasts.com/podcast/iot-for-all-podcast/2022-08-18-using-physical-layer-1-for-ultimate-data-visibility-sepios-yossi-appleboum#t=682) Device Identification and Hidden Assets
- [14:01](https://hardwarepodcasts.com/podcast/iot-for-all-podcast/2022-08-18-using-physical-layer-1-for-ultimate-data-visibility-sepios-yossi-appleboum#t=841) Security Misconceptions and Asset Counts
- [16:17](https://hardwarepodcasts.com/podcast/iot-for-all-podcast/2022-08-18-using-physical-layer-1-for-ultimate-data-visibility-sepios-yossi-appleboum#t=977) Advice for Security Journeys and Basic Threats

## Topics

- [Security & privacy](https://hardwarepodcasts.com/topic/security-and-privacy)
- [Connected products & IoT](https://hardwarepodcasts.com/topic/connected-products-and-iot)

## Most relevant to

companies scaling up

## Mentioned

- Sepio (company)
- Yossi Appleboum (other)
- Ryan Chacon (other)
- Cisco (company)
- Raspberry Pi (product)
- CIA (company)
- CIS (company)

## Related episodes from other shows

- [255: How AI is Reshaping Security and OT Network Requirements featuring Felipe Sabino Costa, Sr. Product Manager for Networking & Cybersecurity at Moxa](https://hardwarepodcasts.com/podcast/manufacturing-happy-hour/2025-09-30-255-how-ai-is-reshaping-security-and-ot-network-requirements-featuring-felipe-sa) (Manufacturing Happy Hour)
- [An Interview with Joe FitzPatrick](https://hardwarepodcasts.com/podcast/the-amp-hour/2017-06-05-an-interview-with-joe-fitzpatrick) (The Amp Hour)
- [IoT Security is only as good as its weakest link](https://hardwarepodcasts.com/podcast/ee-times-current/2020-05-26-iot-security-is-only-as-good-as-its-weakest-link) (EE Times Current)
- [515: Script Boomers](https://hardwarepodcasts.com/podcast/embedded-fm/2025-11-27-515-script-boomers) (Embedded.fm)
- [225: Communication Silos for Product Design Stakeholders](https://hardwarepodcasts.com/podcast/product-startup/2024-05-09-225-communication-silos-for-product-design-stakeholders) (Product Startup)

## Citing this page

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