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1. 发明专利

GB2588107A Secure publish-subscribe communication methods and apparatus 未知
公开(公告)号：GB2588107A
公开(公告)日：2021-04-21
申请号：GB201914444
申请日：2019-10-07
申请人： BRITISH TELECOMM
发明人： DANIEL BASTOS , FADI EL-MOUSSA
IPC分类号： H04L29/08 , G06F21/60 , H04L29/06
摘要： A publish-subscribe protocol in a network comprising publisher(s), a broker and subscriber(s), comprising one of the publishers: i-a. receiving a public key from the broker; i-b. determining, based on attribute(s) of data to be published to the broker, whether a sensitivity level of the data is low; and ii. following steps i-a and i-b, publishing the data to the broker, wherein: if the sensitivity level of the data is low, the data is transmitted to the broker unencrypted and when it is not low the data is encrypted before transmitting the resulting encrypted data to the broker, wherein the step of encrypting uses the public key. Also, a method performed at the broker comprises: receiving encrypted data from a publisher, determining based on one or more attributes of the data whether the sensitivity level of the data is high; and publishing the encrypted data to one of the subscriber devices by the broker, wherein: when the determination is that the sensitivity level of the data is not high the broker forwards the encrypted data to a subscriber and when the sensitivity level is high the broker encrypts the encrypted data to produce double-encrypted data which is transmitted to a subscriber.

2. 发明专利

GB2597909A Computer-implemented security methods and systems 未知
公开(公告)号：GB2597909A
公开(公告)日：2022-02-16
申请号：GB202011025
申请日：2020-07-17
申请人： BRITISH TELECOMM
发明人： BEHNAM AZVINE , FADI EL-MOUSSA , DANIEL BASTOS
IPC分类号： G06F21/55 , G06F21/82 , G06N20/00
摘要： One method involves a machine learning algorithm updating weighting coefficients associated with threat factors, threat factors having values defined for requests for peripheral devices to connect to networked devices coupled to a secure network; updating a security policy associated with the secure network in respect of a particular threat factor when that threat factor’s weighting coefficient changes by more than a predetermined amount in a predetermined period; and automatically approving or denying requests for peripheral devices to connect to the networked devices in dependence on that policy. Another method involves obtaining a peripheral connection request profile, obtaining a threat score associated with the request, where the threat score is determined from a weighted combination of threat factors dependent on contents of a field of the profile and having a weighting coefficient; denying the request when the threat score is above a threshold, otherwise, obtaining a policy decision based on profile and secure network policy comparison and providing request approval or denial according to the policy decision. Storing the profile in a database in association with an approval/denial indication of the request, updating weighting coefficients in dependence on the database contents, and updating the policy in response to changing weighting coefficients.

3. 发明专利

GB2608592A Network security 未知
公开(公告)号：GB2608592A
公开(公告)日：2023-01-11
申请号：GB202109365
申请日：2021-06-29
申请人： BRITISH TELECOMM
发明人： DANIEL BASTOS , FADI EL-MOUSSA
IPC分类号： H04L9/40
摘要： A processor-controlled device 104 and remote system 114 for identifying malicious behaviour in a network. The processor-controlled device (e.g. a gateway, router or home hub) identifies (e.g. using a machine learning system) a first portion of a data transmission 107 indicative of an anomaly and a second portion of the data transmission comprising personal data. The processor-controlled device generates a modified data transmission 112, the modification of the data transmission comprising anonymising at least the second portion of the data transmission, and sends the modified data transmission to the remote system for identification of whether the first portion of the data is indicative of malicious behaviour. If the first portion is indicative of malicious behaviour, then the remote system may send a response (118, Figure 2) indicative of this to the processor-controlled device. The response may include a policy to be implemented by the processor-controlled device. The modification of the data transmission may include encrypting the first portion and the encryption may be attribute-based. By providing anonymised data to the remote system the privacy of users is ensured.

4. 发明专利

GB2588107B Secure publish-subscribe communication methods and apparatus 未知
公开(公告)号：GB2588107B
公开(公告)日：2022-11-02
申请号：GB201914444
申请日：2019-10-07
申请人： BRITISH TELECOMM
发明人： DANIEL BASTOS , FADI EL-MOUSSA
IPC分类号： H04L67/55 , G06F21/60 , H04L9/40 , H04L67/562
摘要： Improvements to publish-subscribe protocols are provided, including a method for communicating data in a network comprising publisher devices, a broker and subscriber devices, comprising one of the publisher devices: i-a. receiving a public key from the broker; i-b. determining, based on one or more attributes of data to be published to the broker, whether a sensitivity level of the data is low; and ii. following completion of both of steps i-a and i-b, publishing the data to the broker, wherein: when step i-b results in a determination that the sensitivity level of the data is low, step ii comprises transmitting the data to the broker unencrypted; and when step i-b results in a determination that the sensitivity level of the data is not low, step ii comprises encrypting the data then transmitting resulting encrypted data to the broker, wherein the step of encrypting the data uses the public key.

5. 发明专利

GB2597909B Computer-implemented security methods and systems 未知
公开(公告)号：GB2597909B
公开(公告)日：2022-09-07
申请号：GB202011025
申请日：2020-07-17
申请人： BRITISH TELECOMM
发明人： BEHNAM AZVINE , FADI EL-MOUSSA , DANIEL BASTOS
IPC分类号： H04L9/40 , G06F21/55 , G06F21/57 , G06F21/82 , G06N20/00
摘要： The present disclosure relates to securing networks against attacks launched via connection of peripheral devices to networked devices. According to one aspect, there is provided a computer-implemented method of automatically updating a network security policy, the method comprising: running a machine learning algorithm to continuously update a plurality of weighting coefficients associated with a respective plurality of threat factors, the threat factors each having values defined for each of a plurality of requests for respective peripheral devices to connect to one or more networked devices which are communicably coupled to a secure network; and automatically updating a security policy associated with the secure network in respect of a particular threat factor when that threat factor's associated weighting coefficient changes by more than a predetermined amount in a predetermined period, wherein requests for peripheral devices to connect to the networked devices are automatically approved or denied in dependence on that policy.

6. 发明专利

GB2590918A Data controls 未知
公开(公告)号：GB2590918A
公开(公告)日：2021-07-14
申请号：GB202000086
申请日：2020-01-05
申请人： BRITISH TELECOMM
发明人： FADI EL-MOUSSA , DANIEL BASTOS
IPC分类号： G06F21/62
摘要： Disclosed is a method of a host computer system to control storage by the host of data received from a network connected user device. The method starts by the host device establishing a data storage policy with the user device, the policy defining criteria for determining if data relating to the user device may be stored by the host. In response to the host accessing data relating to the user device, determining if the data can be stored by the host based on the criteria of the policy, then storing the data based on result of the determination. The data relating to the user device may be details of commutations, movements and/or locations of the user device. The host device may apply the strictest policy of the policies on file if the identity of the coupled user device cannot be determined.

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