Patents
US 12192237 B2: Detecting attacks using handshake requests systems and methods
- Granted
- 2025-01-07
- Filed
- 2021-04-21 application 17236233
- Type
- Utility · 11 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Systems and methods for detecting attacks using a handshake request are provided. A plurality of devices can receive a plurality of handshake requests to establish TLS connections that include a respective application request. At least one of the plurality of handshake requests can include a first application request. The plurality of devices can record each of the respective application requests to a registry of application requests. A first device of the plurality of devices can receive a subsequent handshake request to establish a subsequent TLS connection that includes the first application request. The first device can query, prior to accepting the first application request, the registry for the first application request. The first device can determine whether to accept or reject the first application request responsive to identifying from the query that the first application request has not been or has been recorded in the registry.
Source: PVGPATDIS, file of 2026-04-10 (ipg250107.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Citrix Systems, Inc. 2,209 patents | US company or organization | Fort Lauderdale, FL | CITRIX SYSTEMS INC SEC filer EXACT medium confidence: identical full name, one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Andrew Penner | Savoy, IL | 25 | PVGPATDIS, file of 2026-04-10 | |
| Tushar Kanekar | Fremont, CA | 25 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H04L | Transmission of digital information, e.g. telegraphic communication | H04L63/1458 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-08-15 | Security interest Security interest Patent security agreement | CLOUD SOFTWARE GROUP, INC. signed 2025-08-14 CITRIX SYSTEMS, INC. signed 2025-08-14 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT WILMINGTON, DE | 72488/172 | PASDL, file of 2026-10-15 |
| 2024-05-24 | Security interest Security interest Security interest | CLOUD SOFTWARE GROUP, INC. (F/K/A TIBCO SOFTWARE INC.) signed 2024-05-22 CITRIX SYSTEMS, INC. signed 2024-05-22 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT WILMINGTON, DE | 67662/568 | PASDL, file of 2026-10-15 |
| 2023-04-14 | Security interest Security interest Patent security agreement | CLOUD SOFTWARE GROUP, INC. (F/K/A TIBCO SOFTWARE INC.) signed 2023-04-10 CITRIX SYSTEMS, INC. signed 2023-04-10 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT WILMINGTON, DE | 63340/164 | PASDL, file of 2026-10-15 |
| 2023-04-14 | Release of security interest Release and reassignment of security interest in patent (reel/frame 062113/0001) | GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT signed 2023-04-10 | CITRIX SYSTEMS, INC. FORT LAUDERDALE, FL CLOUD SOFTWARE GROUP, INC. (F/K/A TIBCO SOFTWARE INC.) FORT LAUDERDALE, FL | 63339/525 | PASDL, file of 2026-10-15 |
| 2022-10-07 | Security interest Security interest Patent security agreement | TIBCO SOFTWARE INC. signed 2022-09-30 CITRIX SYSTEMS, INC. signed 2022-09-30 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT WILMINGTON, DE | 62113/470 | PASDL, file of 2026-10-15 |
| 2022-10-07 | Security interest Security interest Second lien patent security agreement | TIBCO SOFTWARE INC. signed 2022-09-30 CITRIX SYSTEMS, INC. signed 2022-09-30 | GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT NEW YORK, NY | 62113/1 | PASDL, file of 2026-10-15 |
| 2022-10-07 | Security interest Security interest Patent security agreement | TIBCO SOFTWARE INC. signed 2022-09-30 CITRIX SYSTEMS, INC. signed 2022-09-30 | BANK OF AMERICA, N.A., AS COLLATERAL AGENT CHARLOTTE, NC | 62112/262 | PASDL, file of 2026-10-15 |
| 2022-09-30 | Security interest Security interest Security interest | CITRIX SYSTEMS, INC. signed 2022-09-30 | WILMINGTON TRUST, NATIONAL ASSOCIATION WILMINGTON, DE | 62079/1 | PASDL, file of 2026-10-15 |
| 2021-04-21 | Assignment Assignment of assignor's interest | PENNER, ANDREW signed 2018-11-19 KANEKAR, TUSHAR signed 2018-11-21 | CITRIX SYSTEMS, INC. FORT LAUDERDALE, FL | 55988/329 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.