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Case 4:18-cv-07229-YGR Document 201-17 Filed 06/01/21 Page 1 of 8
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`Exhibit 19
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`REDACTED VERSION OF DOCUMENT
`SOUGHT TO BE SEALED
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`

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`Case 4:18-cv-07229-YGR Document 201-17 Filed 06/01/21 Page 2 of 8
`
` IN THE UNITED STATES DISTRICT COURT
` FOR THE NORTHERN DISTRICT OF CALIFORNIA
` OAKLAND DIVISION
`----------------------------x
`FINJAN, INC., a Delaware :
`Corporation, :
` Plaintiff, : Case No.:
`vs. : 4:18-CV-07229-YGR
`QUALYS, INC., a Delaware :
`Corporation, :
` Defendant. :
`----------------------------x
`
` HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS' EYES ONLY
`
` Videotaped Deposition of QUALYS, INC.,
` by and through its corporate designee,
` HOLGER KRUSE
` Conducted Virtually
` Monday, September 14, 2020
` 9:00 a.m. PDT
`
`Job No.: 320088
`Pages: 1 - 197
`Reported By: Theresa A. White, CSR, RPR, RMR, CRR
`
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`Case 4:18-cv-07229-YGR Document 201-17 Filed 06/01/21 Page 3 of 8
`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS' EYES ONLY
`Transcript of Holger Kruse, Corporate Designee
`
`

`

`Case 4:18-cv-07229-YGR Document 201-17 Filed 06/01/21 Page 4 of 8
`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS' EYES ONLY
`Transcript of Holger Kruse, Corporate Designee
`
`

`

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`Case 4:18-cv-07229-YGR Document 201-17 Filed 06/01/21 Page 5 of 8
`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS' EYES ONLY
`Transcript of Holger Kruse, Corporate Designee
`Conducted on September 14, 2020
`
`9
`
`management, policy compliance and web application
`scanning?
` MR. MAYS: Same objection.
` THE WITNESS: There may be indirect use of
`the results. The scan types which we receive are
`always one of these three types, but there may be
`products in the front end which make use of this
`data for other purposes. I'm not aware of any
`details of how this data might be used.
` Q (By Mr. Lee) Can you elaborate? What do
`you mean by "indirect use of the results"?
` A Well, the results of scans are stored in
`the data center, and we have multiple different
`products which make use of scan results in
`different ways. Vulnerability management and
`policy compliance are the core products, but other
`products have been layered around it which may
`also make use of those results in different ways.
` Q Which products make indirect use of the
`results?
` A I don't have any details. I just know
`that the data has been imported into other
`products in the past.
` MR. MAYS: And objection. Outside the
`scope.
`
`PLANET DEPOS
`888.433.3767 | WWW.PLANETDEPOS.COM
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`12:55:37
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`
`Case 4:18-cv-07229-YGR Document 201-17 Filed 06/01/21 Page 6 of 8
`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS' EYES ONLY
`Transcript of Holger Kruse, Corporate Designee
`Conducted on September 14, 2020
`
`134
`
` THE WITNESS: That has historic reasons.
`It's because the way the scanner appliances work,
`it would be difficult for us to have a completely
`separate scan engine running parallel with ML. It
`is easier for the external engine to piggyback
`onto the architecture we already have, with the ML
`extension.
` Q (By Mr. Lee) Do you see there is
`something that says "NOC Host Messages"?
` A Yes.
` Q Do you have any understanding of what that
`is?
` A Yes. NOC host is -- N-O-C stands for
`network operations center. NOC host is a service
`that is run in the data center where we keep
`events and telemetry information. For instance,
`scanner health information, sensor data,
`temperature, hard-disc problems, those kinds of
`things.
` So it is common for scan engines to report
`any unusual events that happen during the scan to
`NOC host as scan events.
` Q What does the webcrawl module do when it
`receives these NOC host messages from WAS?
` MR. MAYS: Objection. Form. Outside the
`
`PLANET DEPOS
`888.433.3767 | WWW.PLANETDEPOS.COM
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`12:56:49
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`Case 4:18-cv-07229-YGR Document 201-17 Filed 06/01/21 Page 7 of 8
`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS' EYES ONLY
`Transcript of Holger Kruse, Corporate Designee
`Conducted on September 14, 2020
`
`135
`
`scope.
` THE WITNESS: It passes them on to a small
`client. This is called HostMon. And the client
`then sends them to the data center.
` Q (By Mr. Lee) Do you see that there is a
`box called Vulnsigs?
` A Yes.
` Q With an arrow pointing to WAS?
` A Yes.
` Q Do you have an understanding what Vulnsigs
`is here?
` A We already talked about this Vulnsigs.
`It's our vulnerability signature repository, and
`this is shared both by regular ML -- I'm sorry.
`By regular VM and PC scans and also by WAS. It
`has signatures for both -- of all three types of
`scans in it.
` Q (By Mr. Lee) Do you have any idea what
`"global config" and "test payloads" refers to?
` A No. That would have to be answered by the
`WAS team.
` Q Do you see there is a thing called JSEN?
` A Yes.
` Q Do you have any understanding what that
`is?
`
`PLANET DEPOS
`888.433.3767 | WWW.PLANETDEPOS.COM
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`Case 4:18-cv-07229-YGR Document 201-17 Filed 06/01/21 Page 8 of 8
`HIGHLY CONFIDENTIAL - OUTSIDE ATTORNEYS' EYES ONLY
`Transcript of Holger Kruse, Corporate Designee
`Conducted on September 14, 2020
`
`136
`
` A Not precisely. I've seen it, the term
`used in connection with web applications, but I
`don't know precisely what it is.
` Q What does WAS do with the Vulnsigs it
`receives?
` MR. MAYS: Objection to form. Outside the
`scope.
` THE WITNESS: The details would have to be
`answered by the WAS team. In general,
`vulnerability signatures drive a scan. They
`determine what a scan should do, and WAS does the
`same, but I don't know the details of how -- of
`what kind of detections are in Vulnsigs and how
`they are used.
` Q (By Mr. Lee) Can you go to the next page,
`Bates ending in 9785?
` A Sure. Yes.
` Q Do you see in the second bullet it says
`"Crawl, parentheses, WebKit, comma, curl"?
` A Yes.
` Q Do you have any understanding what that
`crawl refers to?
` MR. LEE: Objection. Outside the scope.
` THE WITNESS: My understanding, and this
`may be incomplete, is that as part of web
`
`PLANET DEPOS
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